Pseudo random noise sequence code generator and CDMA radio commu

Details Pseudo random noise sequence code generator and CDMA radio commu Pseudo random noise sequence code generator and CDMA radio commu

1996-05-14

1998-11-10

Chin, Wellington

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

375200, 375206, 341173, 370320, 370342, 370441, 370479, 370311, H04B 7216, H04B 169, H04J 1302, H04J 1304

Patent

active

058354883

ABSTRACT:
A pseudo random noise sequence code generating circuit has a sequence generator (11) for sequentially generating a maximum length linear code sequence at an N-chip cycle and a first to (N-1)th vector multiplier (12 to 14) for obtaining values of skipped portions in the sequence generator by vector multiplication. It does so on the basis of the state value (S1) of a register forming the sequence generator, and generates a successive pseudo random noise sequence code based on an output of the sequence generator (PN1) and outputs of the first to the (N-1)th vector multiplier (PN2 to PN4). Thereby, the operating rate can be reduced to 1/N as compound to the prior art, and the operating voltage and electric power consumption can be reduced.

REFERENCES:
patent: 5606322 (1997-02-01), Allen et al.
patent: 5623485 (1997-04-01), Bi
patent: 5631922 (1997-05-01), Sekine et al.
patent: 5671221 (1997-09-01), Yang

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