Optimization of Linear Dispersion Codes for Two-Way Wireless Relay Networks

Ha X. NGUYEN  Ha H. NGUYEN  Tho LE-NGOC  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.3   pp.656-659
Publication Date: 2010/03/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.656
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
Keyword: 
distributed space-time coding,  two-way relay network,  coding gain,  pairwise error probability (PEP),  stochastic optimization,  

Full Text: PDF>>
Buy this Article




Summary: 
A stochastic quasi-gradient algorithm is applied to design linear dispersion (LD) codes for two-way wireless relay networks under Rayleigh fading channels. The codes are designed to minimize an upper bound of the average pairwise error probability. Simulation results show that the codes obtained by the optimization technique achieve a coding gain over codes that are randomly generated based on the isotropic distribution.