Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2006-02-21
2006-02-21
Nguyen, Steven (Department: 2665)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S335000, C370S342000, C370S479000, C375S130000, C375S147000
Reexamination Certificate
active
07002902
ABSTRACT:
Codes are applied to signals to reduce the number of transceivers and associated RF cabling extending from base electronics to antenna array electronics in a base station providing beam forming. The transceivers can be reduced to as few as one, and the RF cabling can be reduced to none. The codes may be orthogonal codes, such as Walsh codes. The codes are applied: to weights used to produce the beam forming, signal being transmitted or received, or both. The codes are applied a second time to decompose the coded weights/signal to associate the weights and signal with the beam forming. The coded weights/signal can be summed, including with other coded weights/signals, to produce a composite code division multiplexed signal for transmission between transceiver(s) and antenna array electronics over a single RF or non-RF cable spanning between the base electronics and array electronics. The complexity, size, and cost of electronics and cables are reduced, and calibration of transceivers and demodulators can be eliminated.
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Hoffmann John E.
LaMont, Jr. Lawrence Wayne
Nelson, Jr. George Rodney
Proctor, Jr. James A.
Rouphael Antoine J.
Hamilton Brook Smith & Reynolds P.C.
Han Clemence
IPR Licensing Inc.
Nguyen Steven
LandOfFree
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