Coded Cooperation on Block-Fading Channels in Single-Carrier FDMA Systems

This paper addresses the coded cooperation in single carrier transmission with frequency-domain equalization. A practical cooperation strategy is provided to facilitate the time-frequency-space diversity for the coded single carrier frequency division multiple access system over frequency-selective Rayleigh block fading channels. To take advantage of the time-frequency dispersion and to facilitate the space diversity through cooperation, each user transmits his partner´s and his own interleaved data on different subcarriers spreading over the entire available bandwidth. The allocation of subcarriers to each user and his partners can be either pre-specified or dynamically determined. Numerical simulations show that the proposed scheme outperforms the direct transmission with improved diversity gains.