Title :
Some super-orthogonal space-time trellis codes based on non-PSK MTCM
Author :
Song, Aijun ; Wang, Genyuan ; Xia, Xiang-Gen
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA
fDate :
5/1/2005 12:00:00 AM
Abstract :
Super-orthogonal space-time trellis codes recently proposed in the literature are space-time trellis codes of full diversity and high rates systematically constructed by concatenating orthogonal space-time codes and multiple trellis coded modulation (MTCM). However, the existing MTCM only has designs for phase-shift keying (PSK) signals. In this paper, MTCM is extended from PSK signals to non-PSK signals in some special cases. With obtained constellations of MTCM, several super-orthogonal space-time trellis codes for two transmit antennas are presented. The 2- and 4-state codes have a simple mathematical expression for the coding gain distance (CGD), or diversity products. At rates 2.5, 3, 3.5, 4 bits/s/Hz, the newly proposed codes outperform the existing ones.
Keywords :
antenna arrays; concatenated codes; diversity reception; mathematical analysis; phase shift keying; space-time codes; transmitting antennas; trellis coded modulation; coding gain distance; nonPSK multiple trellis coded modulation; phase shift keying signals; super-orthogonal space-time trellis codes; transmit antennas; Convolutional codes; Eigenvalues and eigenfunctions; Fading; Lattices; Modulation coding; Phase shift keying; Signal design; Space time codes; Transmitting antennas; Wireless communication; Alamouti´s scheme; coding gain distance (CGD); lattices; multiple trellis coded modulation (MTCM); orthogonal design; space-time trellis codes;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2005.847110
