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  <xs:element name="BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsScheduleofCompanyRecognizedRevenueTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsScheduleofCompanyRecognizedRevenueTable"/>
  <xs:element name="BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsScheduleofCompanyRecognizedRevenueLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsScheduleofCompanyRecognizedRevenueLineItems"/>
  <xs:element name="DeferredTaxAssetsTaxDeferredExpenseDepreciationAndAmortization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_DeferredTaxAssetsTaxDeferredExpenseDepreciationAndAmortization"/>
  <xs:element name="DeferredTaxAssetsDeferredExpenseCapitalizedResearchAndDevelopmentCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_DeferredTaxAssetsDeferredExpenseCapitalizedResearchAndDevelopmentCosts"/>
  <xs:element name="IncomeTaxProvisionDetailsScheduleofIncomeTaxesProvidedattheFederalStatutoryRateTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_IncomeTaxProvisionDetailsScheduleofIncomeTaxesProvidedattheFederalStatutoryRateTable"/>
  <xs:element name="IncomeTaxProvisionDetailsScheduleofIncomeTaxesProvidedattheFederalStatutoryRateLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_IncomeTaxProvisionDetailsScheduleofIncomeTaxesProvidedattheFederalStatutoryRateLineItems"/>
  <xs:element name="StockBasedCompensationDetailsScheduleofOptionsOutstandingTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_StockBasedCompensationDetailsScheduleofOptionsOutstandingTable"/>
  <xs:element name="StockBasedCompensationDetailsScheduleofOptionsOutstandingLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_StockBasedCompensationDetailsScheduleofOptionsOutstandingLineItems"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsRSUsGranted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsRSUsGranted"/>
  <xs:element name="SharesAvailableForGrantRSUsCancelledAndReturnedToThePlans" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_SharesAvailableForGrantRSUsCancelledAndReturnedToThePlans"/>
  <xs:element name="NumberOfSharesRSUsCancelledAndReturnedToThePlansinDollarsPerShare" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_NumberOfSharesRSUsCancelledAndReturnedToThePlansinDollarsPerShare"/>
  <xs:element name="StockBasedCompensationDetailsScheduleofRSUActivityUnderPlansTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_StockBasedCompensationDetailsScheduleofRSUActivityUnderPlansTable"/>
  <xs:element name="StockBasedCompensationDetailsScheduleofRSUActivityUnderPlansLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_StockBasedCompensationDetailsScheduleofRSUActivityUnderPlansLineItems"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValueEffectOfBusinessCombination" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="prso_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValueEffectOfBusinessCombination"/>
  <xs:element name="NumberOfWarrantsOnCommonSharesRecognitionOfWarrantLiabilities" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_NumberOfWarrantsOnCommonSharesRecognitionOfWarrantLiabilities"/>
  <xs:element name="RecognitionOfWarrantLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="prso_RecognitionOfWarrantLiabilities"/>
  <xs:element name="NumberOfWarrantsOnCommonSharesChangeInFairValueOfWarrants" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_NumberOfWarrantsOnCommonSharesChangeInFairValueOfWarrants"/>
  <xs:element name="ClassofWarrantorRightExpiredOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="prso_ClassofWarrantorRightExpiredOutstanding"/>
  <xs:element name="WarrantsExpiration" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_WarrantsExpiration"/>
  <xs:element name="TheCompanyandSummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_TheCompanyandSummaryofSignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="NetProceedsFromCommonStockAndWarrants" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_NetProceedsFromCommonStockAndWarrants"/>
  <xs:element name="SpecificAllowance" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_SpecificAllowance"/>
  <xs:element name="BusinessCombinationsTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_BusinessCombinationsTerm"/>
  <xs:element name="DisposalGroupIncludingDiscontinuedOperationGainsAndLossesOnDisposalOfFixedAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_DisposalGroupIncludingDiscontinuedOperationGainsAndLossesOnDisposalOfFixedAssets"/>
  <xs:element name="DisposalGroupIncludingDiscontinuedOperationAccumulatedDepreciation" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_DisposalGroupIncludingDiscontinuedOperationAccumulatedDepreciation"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="CommitmentsandContingenciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CommitmentsandContingenciesDetailsLineItems"/>
  <xs:element name="AmountOfPendingLeaseIncentive" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="prso_AmountOfPendingLeaseIncentive"/>
  <xs:element name="LeaseLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_LeaseLiability"/>
  <xs:element name="RentExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_RentExpense"/>
  <xs:element name="DefinedContributionPlanRequiredAgeOfEmployeesToBeEligibleForParticipationInPlan" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_DefinedContributionPlanRequiredAgeOfEmployeesToBeEligibleForParticipationInPlan"/>
  <xs:element name="DefinedContributionPlanMaximumContributionsByPlanParticipantsPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_DefinedContributionPlanMaximumContributionsByPlanParticipantsPercentage"/>
  <xs:element name="BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_BusinessSegmentsConcentrationofCreditRiskandSignificantCustomersDetailsTable"/>
  <xs:element name="IncomeTaxProvisionDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_IncomeTaxProvisionDetailsTable"/>
  <xs:element name="IncomeTaxProvisionDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_IncomeTaxProvisionDetailsLineItems"/>
  <xs:element name="EquityMethodOwnershipPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_EquityMethodOwnershipPercentage"/>
  <xs:element name="PercentageOfLimitationOnFederalAndStateNetOperatingLossCarryforwards" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PercentageOfLimitationOnFederalAndStateNetOperatingLossCarryforwards"/>
  <xs:element name="PercentageOfLimitationOnFederalTaxCreditCarryforwards" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PercentageOfLimitationOnFederalTaxCreditCarryforwards"/>
  <xs:element name="StockBasedCompensationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_StockBasedCompensationDetailsTable"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumVotingPowerPercentageForApplicabilityOfSpecificExpirationTerm" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="prso_ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumVotingPowerPercentageForApplicabilityOfSpecificExpirationTerm"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumExpirationTermApplicableToHoldersOfSpecificPercentageOfVotingRightsOfAllClasses" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumExpirationTermApplicableToHoldersOfSpecificPercentageOfVotingRightsOfAllClasses"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfPlan" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfPlan"/>
  <xs:element name="PercentageOfVotingPower" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PercentageOfVotingPower"/>
  <xs:element name="StockholdersEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_StockholdersEquityDetailsTable"/>
  <xs:element name="AggregateExchangeableShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_AggregateExchangeableShares"/>
  <xs:element name="ExchangeableSharesPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ExchangeableSharesPercentage"/>
  <xs:element name="VotingPowerPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_VotingPowerPercentage"/>
  <xs:element name="ExchangeableSharesExchangedIntoCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ExchangeableSharesExchangedIntoCommonStock"/>
  <xs:element name="ExercisePricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ExercisePricePerShare"/>
  <xs:element name="PurchasePricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PurchasePricePerShare"/>
  <xs:element name="FairValueOfTheWarrantLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_FairValueOfTheWarrantLiability"/>
  <xs:element name="FairValueGrantDateValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_FairValueGrantDateValue"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="PaymentToConsultant" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_PaymentToConsultant"/>
  <xs:element name="LicenseandAssetSaleTransactionDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_LicenseandAssetSaleTransactionDetailsTable"/>
  <xs:element name="ShipmentsOfAdditionalEOLOrders" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="prso_ShipmentsOfAdditionalEOLOrders"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="prso_SubsequentEventsDetailsTable"/>
  <xs:element name="PurchaseOfShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="prso_PurchaseOfShares"/>
  <xs:element name="OutstandingCommonStockOwnPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingCommonStockOwnPercentage"/>
  <xs:element name="CommonStockWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CommonStockWarrantsMember"/>
  <xs:element name="CustomerAMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerAMember"/>
  <xs:element name="CustomerBMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerBMember"/>
  <xs:element name="CustomerCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerCMember"/>
  <xs:element name="CustomerDMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerDMember"/>
  <xs:element name="CustomerEMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerEMember"/>
  <xs:element name="CustomerFourMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerFourMember"/>
  <xs:element name="CustomerMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerMember"/>
  <xs:element name="CustomerOneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerOneMember"/>
  <xs:element name="CustomerThreeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerThreeMember"/>
  <xs:element name="CustomerTwoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_CustomerTwoMember"/>
  <xs:element name="EscrowSharesCommonStockMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_EscrowSharesCommonStockMember"/>
  <xs:element name="EscrowSharesExchangeableSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_EscrowSharesExchangeableSharesMember"/>
  <xs:element name="ExchangeableSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_ExchangeableSharesMember"/>
  <xs:element name="FederalStatutoryRateMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_FederalStatutoryRateMember"/>
  <xs:element name="JanuaryTwoThousandTwentyThreeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_JanuaryTwoThousandTwentyThreeMember"/>
  <xs:element name="MarkhamLandlordMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_MarkhamLandlordMember"/>
  <xs:element name="MemoryICsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_MemoryICsMember"/>
  <xs:element name="OctoberTwoThousandTwentyThreeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OctoberTwoThousandTwentyThreeMember"/>
  <xs:element name="OptionsToPurchaseCommonStockMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OptionsToPurchaseCommonStockMember"/>
  <xs:element name="OtherMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OtherMember"/>
  <xs:element name="OutstandingAndExercisableOptionsFiveMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingAndExercisableOptionsFiveMember"/>
  <xs:element name="OutstandingAndExercisableOptionsFourMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingAndExercisableOptionsFourMember"/>
  <xs:element name="OutstandingAndExercisableOptionsOneMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingAndExercisableOptionsOneMember"/>
  <xs:element name="OutstandingAndExercisableOptionsThreeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingAndExercisableOptionsThreeMember"/>
  <xs:element name="OutstandingAndExercisableOptionsTwoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_OutstandingAndExercisableOptionsTwoMember"/>
  <xs:element name="PrefundedWarrantsExercisedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PrefundedWarrantsExercisedMember"/>
  <xs:element name="PrefundedWarrantsIssuedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PrefundedWarrantsIssuedMember"/>
  <xs:element name="PrefundedWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PrefundedWarrantsMember"/>
  <xs:element name="PurchaseWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_PurchaseWarrantsMember"/>
  <xs:element name="RestOfWorldMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_RestOfWorldMember"/>
  <xs:element name="RoyaltyAndOtherMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_RoyaltyAndOtherMember"/>
  <xs:element name="SectionThreeEightTwoLimitationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_SectionThreeEightTwoLimitationMember"/>
  <xs:element name="SeriesAWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_SeriesAWarrantsMember"/>
  <xs:element name="SeriesBWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_SeriesBWarrantsMember"/>
  <xs:element name="StockIncentivePlan2019Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_StockIncentivePlan2019Member"/>
  <xs:element name="TorontoLeaseMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_TorontoLeaseMember"/>
  <xs:element name="TwoThousandTwentyThreePurchaseWarrantMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_TwoThousandTwentyThreePurchaseWarrantMember"/>
  <xs:element name="TwoThousandTwentyTwoPurchaseWarrantMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_TwoThousandTwentyTwoPurchaseWarrantMember"/>
  <xs:element name="UnvestedRestrictedCommonStockUnitsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_UnvestedRestrictedCommonStockUnitsMember"/>
  <xs:element name="mmWaveICsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_mmWaveICsMember"/>
  <xs:element name="mmWaveModulesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_mmWaveModulesMember"/>
  <xs:element name="mmWaveOtherProductsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_mmWaveOtherProductsMember"/>
  <xs:element name="BalanceSheetDetailAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_BalanceSheetDetailAbstract"/>
  <xs:element name="MemoryICProductEndofLifeAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_MemoryICProductEndofLifeAbstract"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="prso_DocumentAndEntityInformationAbstract"/>
</xs:schema>
