Pipelined fast hadamard transform

Details Pipelined fast hadamard transform Pipelined fast hadamard transform

1998-02-25

2000-02-22

Le, Amanda T.

Pulse or digital communications

Repeaters

Testing

375208, 375343, 375346, 370209, 704204, 708410, H04B 1500

Patent

active

060288892

ABSTRACT:
A pipelined Fast Hadamard Transform ("FHT") architecture is disclosed that comprises log.sub.2 N identical pipeline stages, which are ideally suited for implementation in application-specific integrated circuits. One 2-port stage of the first illustrative embodiment of the present invention advantageously comprises: a first input for sequentially receiving N incoming correlation signals, I(i), at cycle i, wherein the N incoming correlation signals are based on N Walsh chips; a processor for generating N outgoing correlation signals based on the N incoming correlation signals, I(i); and a first output for sequentially outputting the N outgoing correlation signals, O(i); wherein ##EQU1## k=(i-N/2).

REFERENCES:
patent: 3792355 (1974-02-01), Miyata et al.
patent: 3956619 (1976-05-01), Mundy et al.
patent: 4209751 (1980-06-01), Sakamoto
patent: 5357454 (1994-10-01), Dent
patent: 5561618 (1996-10-01), Dehesh
patent: 5574675 (1996-11-01), Lin
patent: 5856935 (1999-01-01), Moy et al.

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