Title :
Structured Lattice Space-Time Trellis Coded Modulation
Author :
Kumar, K. Raj ; Caire, G.
Author_Institution :
Univ. of Southern California, Los Angeles
Abstract :
This paper addresses the issue of the design of Space-Time (ST) codes for long block-lengths that have good coding gain and minimal decoding complexity. A general technique to encode information onto cosets and points of a sequence of nested lattices is used to construct ST trellis coded modulation (TCM) schemes with good coding and shaping gains, and is termed as structured lattice space-time trellis coded modulation (S-LaST TCM). These codes permit low complexity minimum mean-squared error generalized decision feedback equalizer (MMSE-GDFE) lattice decoding. Code construction examples are presented, and simulation results reveal excellent performances.
Keywords :
computational complexity; mean square error methods; space-time codes; trellis coded modulation; coding gain; decoding complexity; generalized decision feedback equalizer; minimum mean-squared error; structured lattice space-time trellis coded modulation; Algebra; Decision feedback equalizers; Decoding; Fading; Frequency; Lattices; MIMO; Modulation coding; OFDM modulation; Signal to noise ratio;
Conference_Titel :
Information Theory, 2007. ISIT 2007. IEEE International Symposium on
Conference_Location :
Nice
Print_ISBN :
978-1-4244-1397-3
DOI :
10.1109/ISIT.2007.4557503
