Title :
Variable-rate trellis coded modulation using punctured codes
Author :
Li, Xiaodong ; Ritcey, James A.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
A new trellis coded modulation scheme using punctured convolutional codes is suggested for wireless data communications. Through bit-by-bit interleaving of the encoder output and simple iterative decoding using hard-decision feedback, the scheme can achieve both high diversity order and large free Euclidean distance simultaneously. Therefore, it performs very well in both uncorrelated Rayleigh fading and additive white Gaussian noise channels. Furthermore, the scheme provides a very simple mechanism for variable-rate transmission through the use of punctured codes
Keywords :
Gaussian channels; Rayleigh channels; convolutional codes; data communication; decoding; fading; feedback; interleaved codes; iterative methods; radiocommunication; trellis coded modulation; variable rate codes; AWGN; additive white Gaussian noise channels; bit by bit interleaving; diversity order; encoder output; free Euclidean distance; hard decision feedback; iterative decoding; punctured convolutional codes; uncorrelated Rayleigh fading channels; variable rate transmission; variable rate trellis coded modulation; wireless data communications; Additive white noise; Convolutional codes; Data communication; Euclidean distance; Interleaved codes; Iterative decoding; Modulation coding; Output feedback; Rayleigh channels; Wireless communication;
Conference_Titel :
Communications, Computers and Signal Processing, 1997. 10 Years PACRIM 1987-1997 - Networking the Pacific Rim. 1997 IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-3905-3
DOI :
10.1109/PACRIM.1997.620340
