Transmitter for spread-spectrum communication

Details Transmitter for spread-spectrum communication Transmitter for spread-spectrum communication

2006-04-04

2006-04-04

Pezzlo, John (Department: 2662)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C375S146000

Reexamination Certificate

active

07023792

ABSTRACT:
A multiplexing timing signal generator (1) generates a multiplexing timing signal activated for each interval corresponding to a number of chips delayed in multiplexing between data to be transmitted. Driven by the multiplexing timing being active, each operation unit multiplies identical data to be transmitted by a chip of a spreading code sequence and each chip corresponding to a spread spectrum result is added in an operation unit3(1) to an offset value and in operation units3(2)–3(N) to their respective, immediately preceding registers2(1)–2(N−1) values and output as signals for subsequent registers2(1)–2(N). Thus a multiplexing process is effected. Data to be transmitted has its spectrum spread by a spreading code sequence C1–CNand a result of multiplexing the same in response to a multiplexing timing signal is output from a register(2(N)) by 1 chip at a time in synchronization with a clock signal.

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