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Optimization of Linear Dispersion Codes for Two-Way Wireless Relay Networks
Ha X. NGUYEN Ha H. NGUYEN Tho LE-NGOC
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/03/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
distributed space-time coding, two-way relay network, coding gain, pairwise error probability (PEP), stochastic optimization,
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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.