Field Expelriments on Real-Time 1-Gbps High-Speed Packet Transmission in MIMO-OFDM Broadband Packet Radio Access
Field Expelriments on Real-Time 1-Gbps High-Speed Packet Transmission in MIMO-OFDM Broadband Packet Radio Access
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MIMO-OFDM宽带分组无线接入实时1Gbps高速分组传输现场实验
DOI：
10.1109/vetecs.2006.1683159
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
M. Sawahashi
中科院分区：
文献类型：
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作者：
H. Taoka;K. Higuchi;M. Sawahashi
本文介绍了在下行正交频分复用（OFDM）无线接入中使用基于天线的自适应调制和信道编码（AMC）进行4 × 4 MIMO复用的实时1gbps分组传输的现场实验结果，该实验采用采用QR分解的最大似然检测和自适应选择幸存符号副本候选（ASESS）的m算法（QRM-MLD）。在平均移动速度为30 km/h的条件下进行的现场实验表明，采用16QAM调制和turbo编码，在平均接收信干扰加背景噪声功率比（SINR）约为13.5 dB的条件下，在100 mhz信道带宽（即10 bit /s /Hz）下，实现了大于1 Gbps的实时分组传输，编码速率为8/9。结果还表明，在真实的传播信道环境中，每个发射信号的平均接收功率相差大于约6 dB，天线相关的AMC对提高测量吞吐量非常有利。最后，我们表明，在测量过程中，使用天线相关的AMC以大约98%的概率实现了大于1 Gbps的测量吞吐量，其中距离蜂窝站点的最大距离约为300 m，发射和接收天线分别为1.5 m和40 cm，总发射功率为10 W
This paper presents field experimental results on real-time 1-Gbps packet transmission using antenna-dependent adaptive modulation and channel coding (AMC) with 4-by-4 MIMO multiplexing using maximum likelihood detection employing QR decomposition and the M-algorithm (QRM-MLD) with adaptive selection of the surviving symbol replica candidates (ASESS) in the downlink orthogonal frequency division multiplexing (OFDM) radio access. The field experiments, which are conducted at the average moving speed of 30 km/h, show that the real-time packet transmission of greater than 1 Gbps in a 100-MHz channel bandwidth (i.e., 10 bits/second/Hz) is achieved at the average received signal-to-interference plus background noise power ratio (SINR) of approximately 13.5 dB using 16QAM modulation and turbo coding with the coding rate of 8/9, The results also show that the antenna-dependent AMC is very beneficial to improve the measured throughput in a real propagation channel environments, where the average received power associated with each transmitted signal varies with the difference of greater than approximately 6 dB. Finally, we show that the measured throughput of greater than 1 Gbps is achieved employing antenna-dependent AMC at the probability of approximately 98% in a measurement course, where the maximum distance from the cell site was approximately 300 m with the respective transmitter and receiver antenna spacings of 1.5 m and 40 cm with the total transmission power of 10 W