AT228281T

Method and apparatus for using walsh shift keying in a spread spectrum communication system

Abstract

The device using multiple parallel functions of each orthogonal communication channel, generating orthogonal code signal communication method and apparatus for user system. Digital data element is signal is originating at least two n lengths' quadrature control element of the EXTERNAL array, wherein the n length's quadrature the common element is provided with a walsh function and communication system. The element (124) usually (126,128) and a one or more code generators a control element selector, a modulation using THE is equal to for orthogonal the function of with is provided with each control element of product. (124) According to producing binary values to a a control element is a data code element with a control element selecting element and data - processing component (100,102) of each group logM. A certain embodiments, a fast Hadamard converter is used to carry on the switching element. Communication signal is generated by them with a orthogonal function in demodulation of preelection value; and a demodulate finally THE energy contents, wherein the energy contents each represents the quadrature modulation unit. Converting energy content with a pair of biggest generating measuring process energy meter data. Related and demodulation can (142) alarm at least two groups of N-TYPE correlation instruments, here, N is a function of used, and a penetrates through the related signal to the holding of each group of correlation instrument (144) demodulators. Each demodulator the output representative THE mutual quardratures the adjusting component and content, and then combination single THE energy content set. The structure further, the stickiness demodulator (172,174) can be used to the received signal amplitude value; and they with the biggest measuring result (170), combination of for data unit (178) collection instrument value.

Term

No projected expiry on record.

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23 members in 13 offices

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35842594United States of AmericaA
9516001United States of AmericaW

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CA2208053A1CanadaA1
WO9619879A1World Intellectual Property Organization (WIPO)A1
AU4467196AAustraliaA
US5602833AUnited States of AmericaA
FI972589AFinlandA
EP0809895A1European Patent Office (EPO)A1
BR9510283ABrazilA
CN1178046AChinaA
AU695711B2AustraliaB2
JPH10510122AJapanA
HK1005530A1Hong Kong, ChinaA1
JP2000115130AJapanA
JP3043422B2JapanB2
RU2176854C2Russian FederationC2
EP0809895B1European Patent Office (EPO)B1
JP3348149B2JapanB2
CN1096156CChinaC
AT228281TThis recordAustriaT
ATE228281T1AustriaT1
DE69528910D1GermanyD1
DE69528910T2GermanyT2
CA2208053CCanadaC
FI115878BFinlandB