Receiver in a wireless communications system for receiving...

H - Electricity – 04 – B

Patent

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Details

H04B 7/06 (2006.01) H04L 1/06 (2006.01) H04B 1/69 (2006.01) H04B 1/707 (2006.01)

Patent

CA 2347478

A receiver for use in a wireless communication system, wherein the wireless communication system includes a transmitter that spreads data with multiple spreading codes. The receiver includes a plurality of despreaders for despreading with multiple despreading codes corresponding to the multiple spreading codes in the transmitter. A plurality of demodulators demodulate outputs of the plurality of despreaders, and a demultiplexer demultiplexes the outputs of the plurality of demodulators. A decoder decodes the output of the multiplexer to produce received traffic channel data. The receiver uses a pilot selector for selecting, in response to a control signal, a reference signal for use in the plurality of demodulators. A mode detector that produces the control signal is responsive to the transmitter transmitting in an orthogonal transmit diversity mode or an adaptive array mode.

Dans un procédé de production de signaux d'éléments d'antenne (112 et 114) pour transmettre un canal de trafic en série (58) à partir d'une pluralité d'éléments (116 et 118) dans un réseau d'antennes, les données dans le canal de trafic en série sont converties en données dans au moins deux canaux de trafic parallèles (64 et 66), ces dernières données étant ensuite étalées avec différents codes d'étalement (68 et 70) afin de produire des signaux de trafic étalés (72 et 74). Les signaux de trafic étalés sont combinés afin de produire des signaux combinés (80), qui sont, chacun, modifiés en fonction de pondérations réseau adaptatives (90 et 92) pour produire des signaux d'éléments (94 et 96). Un signal pilote est ensuite ajouté (98) à au moins un signal d'élément, dans le but de produire au moins deux signaux d'éléments d'antenne (94 et 96).

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