On the Block Size Design for Single Carrier Overlap Frequency Domain Equalization

In this paper, we propose, based on the analytical analysis of the received signal for single carrier overlap frequency domain equalizer (SC-OFDE) equalization, an optimum design of the overlap frequency domain equalization. From the estimation of the received signal-to-interference-and-noise-ratio (SINR), we propose an algorithm that automatically adapts one important parameter of the OFDE equalization the used part of the equalized signal, denoted the block size, in the specific case of fixed window length. The procedure consists of selecting the window length and then performed the Fourier transform for the associate length. For each element of the orthogonal basis, we estimate the received SINR and finally select the appropriate block size based on the modulation, the channel variation and the accuracy requested by the transmission. Simulation results show that proposed design for the OFDE transmission can adaptively manage the complexity and the performance of the transmission. KeywordsSingle Carrier, Overlap FDE, SINR Estimation.