Subsection receiving algorithm of OFDM Signals in a time-varying channel
Xiaolong Liu · Electronics Optics & Control · 2007
By analyzing the receiving performance of Orthogonal Frequency Division Multiplex(OFDM) system,frequency offset and the timing of system are studied.To improve the system performance and increase the receiving SIR,the effect of frequency offset and the timing of system on performance of the system is analyzed.An improved receiving algorithm is proposed based on analysis to performance and characteristics of an OFDM system in time-varying channels.We made comparison to the performance of direct receiving algorithm and that of the improved subsection receiving algorithm by simulation.The result proved that the later algorithm has an improved SIR and system capacity.But as the quantity of subsections increases,the SIR improvement becomes weak gradually.