Patent ID: 8184745
Filing Date: 2012-05-22
Classification: H04L

Abstract:
1. A receiver that receives a radio frequency (RF) signal from a communication link, the RF signal including a stream of transmitted symbols modulated onto a carrier, each of the transmitted symbols being selected from a constellation of base symbols to represent a plurality of encoded data bits, the receiver comprising: a radio frequency (RF) module operable to produce a stream of received symbols derived from the stream of transmitted symbols included within the RF signal; a demodulator operable to receive the stream of receive symbols and to produce a stream of soft bits derived from the stream of received symbols; a memory device operable to store information related to a plurality of base symbols in the constellation, the information including a nearest-neighbor look-up table and a polarity look-up table for each data bit represented by a base symbol in the constellation; and a channel decoder operable to receive the stream of soft bits from the demodulator and to produce a stream of decoded data bits derived from the stream of soft bits, wherein for each received symbol in the stream of received symbols the demodulator: for each first data bit included within the closest symbol, the demodulator: