Experimental investigation of fractional sampling in IEEE802.11a WLAN system
Experimental investigation of fractional sampling in IEEE802.11a WLAN system
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DOI：
10.1109/iccs.2008.4737407
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发表时间：
2008-07
期刊：
影响因子：
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通讯作者：
S. Toshiya;H. Nishimura;M. Inamori;Y. Sanada
中科院分区：
文献类型：
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作者：
S. Toshiya;H. Nishimura;M. Inamori;Y. Sanada
在IEEE802.11a无线局域网标准中，采用正交频分复用（OFDM）调制。分集技术通常用于克服OFDM系统中的衰落信道。此外，由于终端的外形因素很重要，因此需要使用单天线的分集技术。分数采样（FS）是一种单天线分集技术。在OFDM通信中，通过FS可以分离多径分量，获得分集增益。然而，对FS的实验研究尚未开展。本文通过实验对IEEE802.11a无线局域网系统中的FS方案进行了评估。特别比较了视距（LOS）和非视距（NLOS）情况下的误码率性能。数值实验结果表明，该算法可以实现路径分集。
In the IEEE802.11a WLAN standard, orthogonal frequency division multiplexing (OFDM) modulation is employed. Diversity techniques are usually utilized to overcome fading channels in OFDM systems. Furthermore, a diversity technique with one antenna is desirable because the form factor of the terminal is important. Fractional sampling (FS) scheme is one of the diversity techniques with a single antenna. Through FS, it is possible to separate multipath components and obtain diversity gain in OFDM communication. However, an experimental investigation of FS has not been carried out. In this paper, the FS scheme on a IEEE802.11a WLAN system is evaluated through an experiment. Especially, the BER performances with line-of-sight (LOS) and non-LOS (NLOS) situations are compared. Numerical results through the experiment indicate that the FS can achieve path diversity.