Abstract
AbstractA novel full rate space‐time turbo codes are presented in this paper. Simulation results and theoretical analysis exhibit its excellent performance. At the encoder, information bits are encoded using a concatenated space‐time turbo coder, and then coded symbols are modulated and assembled by a pre‐defined function rather than punctured as in other schemes. It can achieve lower code rate (because it doesn't puncture the coded signals), get more coding gains and take advantage of both space and time diversity. Since its decoding needs to calculate two extrinsic probabilities simultaneously, traditional Log‐Map decoding algorithm fails to be used directly. An extended 2‐dimensional (2‐D) Log‐Map (maximum a posterior probability) decoding algorithm and another one based on Bayesian Network are developed to decode the proposed scheme. Under the same conditions, the proposed scheme will bring about 12 dB gains at BER 1.0e−5 and about 12–14 dB gains at FER 1.0e−3 over some other known schemes at quasi‐static fading channels, and above 10 dB at BER 1.0e−5 and FER 1.0e−3 over time‐varying fading channels. Copyright © 2003 John Wiley & Sons, Ltd.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call