Systems and Methods for Transmitting Data Using Parallel Decode Capacity Optimized Symbol Constellations

[摘要] Transmitters are described that use non-uniformly spaced symbol constellations that have increased capacity compared to conventional constellations. In many embodiments, a transmitter includes a coder configured to receive bits and output encoded bits, a mapper configured to map said encoded bits to symbols in a non-uniform symbol constellation selected from a plurality of symbol constellations, and a modulator configured to generate a signal for transmission via the communication channel using symbols generated by the mapper. In a variety of embodiments, wherein the non-uniform symbol constellation comprises a set of non-uniformly spaced constellation points, and the location points in the non-uniform symbol constellation are chosen to optimize parallel decode capacity of the non-uniform symbol constellation subject to at least one optimization constraint. In many embodiments, the non-uniform symbol constellation is a quadrature amplitude modulation constellation or a phase shift keyed constellation.

[发布日期] 2018-12-04

[学科分类] 工程和技术（综合）

[关键词] CHANNELS (DATA TRANSMISSION);DECODING;MODULATORS;SATELLITE CONSTELLATIONS;TELECOMMUNICATION;SIGNAL TRANSMISSION;TRANSMITTERS;PATENTS;BINARY DIGITS;BITS;DEMODULATION;DIGITAL SYSTEMS;NORMAL DENSITY FUNCTIONS;QUADRATURE AMPLITUDE MODULATION