The legitimate user firstly transmits training signals. Since there exists security problem in the 0/1 space hopping technique in forward training mode when both the training scheme and the space hopping pattern are leaked, and the feedback process in the 0/1 space hopping technique with weight feedback results in low real-time performance and low reliability, a space hopping transceiver technique with transmission focusing is proposed to improve the. Moreover, we show that the performance of the proposed equalization scheme improves signicantly when higher order constellations are used for digital modulation. Simulation re- sults show that our proposed algorithm has a signicant improve- ment over the low complexity linear turbo equalizer. Performance of the proposed detection scheme is veried through simulations using different signal constellations. computational complexity grows only linearly with the number of equalizer coefcients, compared to the quadratic complexity of minimum mean square error-based linear turbo equalizer with time-varying coefcients.
The proposed SDFE algorithm offers a novel approach to combat error propagation.
The purpose of this paper is to develop a low-complexity, iterative soft-decision feedback equalization (SDFE) receiver for severe, frequency selective ISI channels. ÓMany communication systems today encounter the problem of data transmission over a channel with inter-symbol interference (ISI).
0 kommentar(er)
