OFDM__important.rar - A historical perspective of orthogonal frequency-division multiplexing
(OFDM) is given with reference to its literature. Its advantages
and disadvantages are reviewed, and its performance is
characterized over highly dispersive channels. The effects of both
time- and frequency-domain synchronization errors are quantified,
and a range of solutions proposed in the recent literature are reviewed.
One of the main objectives of this review is to highlight the
recent thinking behind adaptive bit allocation and turbo coding in
the context of OFDM. This paper concludes with a wide-ranging
throughput comparison of the schemes discussed herein under the
unified constraint of a fixed target bit error rate of 10 4.,2014-01-01 06:16:36,下载4次
mimo_ofdm_slm.rar - In this paper, we present a Selected Mapping (SLM) PAPR reduction technique for MIMOOFDM
system with special protection of Side Information (SI). Selected Mapping (SLM)
is a powerful PAPR reduction technique since it does not cause any signal distortion and
simple to implement. As a special protection for the Side Information (SI) of SLM technique,
we propose a SI power allocation procedure. Simulation results show that our proposed
technique gives significantly better BER performance than the ordinary SLM technique for
MIMO-OFDM systems. Analysis for the optimum SI power allocation is also presented.,2014-01-01 06:11:34,下载30次
Low-Complexity-PAPR-Reduction-Technique-for-STBC- - Selective mapping algorithm is proposed to reduce the peak-to-average power ration (PAPR) in MIMO-OFDM system.
It is proved that the conjugate symbols on two antennas have the same PAPR property with orthogonal space-time block coded (STBC). By using the characteristic, the computational
complexity cost and the side information (SI) is significantly
reduced compared with the concurrent SLM algorithm.
Simulation results demonstrate that the performance of the proposed algorithm outperforms the conventional concurrent
SLM algorithm.,2014-01-01 06:04:45,下载7次