Method and apparatus for enhancing communication reception at a

Details Method and apparatus for enhancing communication reception at a Method and apparatus for enhancing communication reception at a

1997-08-27

2000-10-10

Trost, William G.

Telecommunications

Transmitter and receiver at separate stations

With control signal

455 59, 455562, H04Q 738

Patent

active

061310166

ABSTRACT:
A system provides transmit diversity with feedback to enhance the reception of communication signals at a wireless communication terminal. Multiple antennae are provided at the base station. The multiple antennae transmit multi-carrier information signals such as OFDM including pilot tones. The wireless communication terminal receives the pilot tones and performs processing on those tones to detect the relationship between the information signals transmitted from the various antennae of the base station. A feedback signal, based on the comparison of the pilot tones communicates back to the base station information about the channels of the respective transmit antennae to the terminals. The base station modifies the transmission processing associated with the various transmit antennae based upon the feedback signal. The modified processing improves the reception of the information signals at the wireless communication terminal.

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