Apparatus and method to combine high data rate wideband...

H - Electricity – 04 – L

Patent

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H04L 27/26 (2006.01) H04B 7/08 (2006.01)

Patent

CA 2541601

The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.

La présente invention concerne un appareil et un procédé pour combiner dans un récepteur à antennes multiples des signaux de communication sans fil en paquets à large bande haut débit, lequel appareil comprend M antennes réceptrices, recevant M signaux de communication sans fil en paquets à large bande haut débit, chacun des signaux contenant N intervalles de fréquence. Selon un mode de réalisation présenté à titre d'exemple, cet appareil comprend (1) des unités de récupération conjointe de rythme effectuant une estimation conjointe approximative de rythme de signal, une estimation conjointe de décalage de fréquence et une estimation conjointe précise de rythme sur chacun des signaux, (2) M unités à transformation de Fourier rapide (TFR), qui convertissent chacune les données numériques pour chacun des M signaux en informations de domaine fréquentiel pour chacune des N fréquences reçues et fournissent Q pilotes pour chacun des signaux, Q étant un nombre entier positif, et (3) un combineur pondérant et combinant les sorties des M unités TFR pour chacune des N fréquences reçues.

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