Joint Channel Estimation and Side Information Scheme for Adaptively Selected OFDM Signals
Orthogonal Frequency Division Multiplexing (OFDM) is a special form of multi-carrier modulation which is robust against the multipath effect and inter symbol interference (ISI). However, it is very sensitive to nonlinear effects due to the high peak-toaverage power ratio (PAPR) owned by the transmitted signals. To reduce PAPR and improve the error performances of the OFDM signals over fading channels, an OFDM system in which Adaptive Symbol Selection Scheme (ASSS) and channel estimation are combined together can be used. The data rate is reduced somewhat in the conventional transmission method because the side information is transmitted with the data information. In order to increase data rate, we propose a new technique to transmit the side information separately in the pilot tones. We demonstrate that the proposed technique can give reasonable bit error rate (BER) performance over fading channels while effectively reducing the PAPR.
Adaptive symbol selection scheme Clipping Fading channels Side information OFDM
Lei Wang Hui Yang Dongweon Yoon Sang Kyu Park Soobum Cho
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）