Wireless communications device providing enhanced block...

H - Electricity – 03 – D

Patent

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Details

H03D 1/00 (2006.01) H03H 7/30 (2006.01) H03K 9/00 (2006.01) H04L 27/06 (2006.01)

Patent

CA 2596180

A wireless communications device (20) may include a wireless receiver (21) receiving wireless signals (30) having alternating known and unknown symbol portions (31, 32) over a channel, and a demodulator systolic array (23) connected to the wireless receiver. The demodulator systolic array (23) may include: a channel estimation module (24) generating respective channel estimates (33) for each unknown symbol portion (32) based upon the known symbol portions (31); an autocorrelation module (25) generating autocorrelation matrices based upon the channel estimates; a channel match filter module (26) generating respective channel matching coefficients for the unknown symbol portions; a factorization module (27) dividing the autocorrelation matrices into respective upper and lower autocorrelation matrices; a transformation module (28) transforming the channel matching coefficients into upper and lower channel matching coefficients; and a back- substitution module (29) determining the unknown symbol portions by estimating the unknown symbol portions based upon respective upper autocorrelation matrices and channel matching coefficients, respective lower autocorrelation matrices and channel matching coefficients, and combining the estimates.

L'invention porte sur un dispositif de communication sans fil (20) pouvant comprendre un récepteur sans fil (21) qui reçoit des signaux sans fil (30) présentant des parties de symbole alternativement connues et inconnues (31, 32) sur un canal, ainsi qu'un réseau systolique de démodulateur (23) comportant : un module d'estimation de canal (24) générant des estimations de canal respectives (33) pour chaque partie de symbole inconnue (32) en fonction des parties de symbole connues (31) ; un module d'autocorrection (25) qui génère des estimations de canal respectives (33) pour chaque partie de symbole inconnue (32) en fonction des parties de symbole connues (31) ; un module d'autocorrélation (25) qui génère des matrices d'autocorrélation en fonction des estimations de canal ; un module de filtre de correspondance de canal (26) qui génère des coefficients de correspondance de canal respectives pour les parties de symbole inconnues ; un module de factorisation (27) qui divise les matrices d'autocorrélation en matrices d'autocorrélation supérieures et inférieures respectives ; un module de transformation (28) qui transforme les coefficients de correspondance de canal en coefficients de correspondance de canal supérieures et inférieures ; ainsi qu'un module de substitution arrière (29) qui détermine les parties de symbole inconnues par estimation des parties de symbole inconnues en fonction des matrices d'autocorrélation supérieures respectives et des coefficients de correspondance de canal, des matrices d'autocorrélation inférieures et des coefficients de correspondance de canal, et par combinaison des estimations.

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