OFDM receiver and metric generator thereof

Details OFDM receiver and metric generator thereof OFDM receiver and metric generator thereof

2007-11-06

2007-11-06

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

C375S341000, C375S325000, C375S340000, C375S262000, C714S792000, C714S791000, C714S759000

Reexamination Certificate

active

10609496

ABSTRACT:
A metric generation scheme for use in OFDM receivers. In a preferred embodiment, an OFDM receiver of the invention includes a dynamic quantizer to compress a series of channel-state information values. Also, a bit de-interleaver is provided to de-interleave a series of symbol-based data inverse to interleaving operations at a transmitter end. The de-interleaved symbol-based data is further compressed by another dynamic quantizer to yield a complex signal according to a constellation scheme. Then a metric generator calculates a bit metric of a zero group and a bit metric of a one group for each received bit in which the constellation is divided into the one group and the zero group for each bit location.

REFERENCES:
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patent: 7099410 (2006-08-01), Chennakeshu et al.
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patent: 2002/0186797 (2002-12-01), Robinson
patent: 2006/0224934 (2006-10-01), Cameron et al.
Lee et al., IEEE Transactions on Consumer Electronics, vol. 44, No. 3, p. 994-1000 (1998).

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