TY - GEN
T1 - Achievable rates and training optimization for fading relay channels with memory
AU - Akin, Sami
AU - Gursoy, Mustafa Cenk
PY - 2008
Y1 - 2008
N2 - In this paper, transmission over time-selective, flat fading relay channels is studied. It is assumed that channel fading coefficients are not known a priori. Transmission takes place in two phases: network training phase and data transmission phase. In the training phase, pilot symbols are sent and the receivers employ single-pilot MMSE estimation or noncausal Wiener filter to learn the channel. Amplify-and-Forward (AF) and Decode-and-Forward (DF) techniques are considered in the data transmission phase and achievable rate expressions are obtained. The training period, and data and training power allocations are jointly optimized by using the achievable rate expressions. Numerical results are obtained considering Gauss-Markov and lowpass fading models. Achievable rates are computed and energy-per-bit requirements are investigated. The optimal power distributions among pilot and data symbols are provided.
AB - In this paper, transmission over time-selective, flat fading relay channels is studied. It is assumed that channel fading coefficients are not known a priori. Transmission takes place in two phases: network training phase and data transmission phase. In the training phase, pilot symbols are sent and the receivers employ single-pilot MMSE estimation or noncausal Wiener filter to learn the channel. Amplify-and-Forward (AF) and Decode-and-Forward (DF) techniques are considered in the data transmission phase and achievable rate expressions are obtained. The training period, and data and training power allocations are jointly optimized by using the achievable rate expressions. Numerical results are obtained considering Gauss-Markov and lowpass fading models. Achievable rates are computed and energy-per-bit requirements are investigated. The optimal power distributions among pilot and data symbols are provided.
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U2 - 10.1109/CISS.2008.4558518
DO - 10.1109/CISS.2008.4558518
M3 - Conference contribution
AN - SCOPUS:51849156602
SN - 9781424422470
T3 - CISS 2008, The 42nd Annual Conference on Information Sciences and Systems
SP - 185
EP - 190
BT - CISS 2008, The 42nd Annual Conference on Information Sciences and Systems
T2 - CISS 2008, 42nd Annual Conference on Information Sciences and Systems
Y2 - 19 March 2008 through 21 March 2008
ER -