TY - JOUR
T1 - Block differential modulation for doubly-selective wireless fading channels
AU - Cano, Alfonso
AU - Ma, Xiaoli
AU - Giannakis, Georgios B
PY - 2005/9/12
Y1 - 2005/9/12
N2 - Differential encoding is known to simplify receiver complexity because it by-passes channel estimation. However, over rapidly fading wireless channels, extra transceiver modules are necessary to enable differential transmission. Relying on a basis expansion model for time and frequency selective (doubly-selective) channels, we derive such a generalized block differential (BD) codec that achieves the maximum Doppler and multi-path diversity gains, while affording low-complexity maximum likelihood (ML) decoding. We further show that existing BD systems over frequency-selective or time-selective channels follow as special cases of our novel system. Simulations corroborate our theoretical analysis.
AB - Differential encoding is known to simplify receiver complexity because it by-passes channel estimation. However, over rapidly fading wireless channels, extra transceiver modules are necessary to enable differential transmission. Relying on a basis expansion model for time and frequency selective (doubly-selective) channels, we derive such a generalized block differential (BD) codec that achieves the maximum Doppler and multi-path diversity gains, while affording low-complexity maximum likelihood (ML) decoding. We further show that existing BD systems over frequency-selective or time-selective channels follow as special cases of our novel system. Simulations corroborate our theoretical analysis.
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M3 - Conference article
AN - SCOPUS:24144496025
SN - 0536-1486
VL - 3
SP - 1922
EP - 1926
JO - Conference Record - International Conference on Communications
JF - Conference Record - International Conference on Communications
M1 - SP02-3
T2 - 2005 IEEE International Conference on Communications, ICC 2005
Y2 - 16 May 2005 through 20 May 2005
ER -