Field Experiments on Ultimate Frequency Efficiency Exceeding 30 Bit/Second/Hz Using MLD Signal Detection in MIMO-OFDM Broadband Packet Radio Access
Field Experiments on Ultimate Frequency Efficiency Exceeding 30 Bit/Second/Hz Using MLD Signal Detection in MIMO-OFDM Broadband Packet Radio Access
复制标题
在 MIMO-OFDM 宽带分组无线接入中使用 MLD 信号检测实现极限频率效率超过 30 位/秒/Hz 的现场实验
DOI：
10.1109/vetecs.2007.440
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
M. Sawahashi
中科院分区：
文献类型：
--
作者：
H. Taoka;Ki Dai;K. Higuchi;M. Sawahashi
本文介绍了在100 MHz信道带宽中4.92 Gbps的极高速分组传输的室内和现场实验结果，即，在下行链路正交频分复用（OFDM）无线电接入中，大约50比特/秒/Hz的频率效率。所需的接收信号噪声功率比（SNR）小于30 dB，这接近几乎上限，在蜂窝环境附近的小区站点，即使与轻信道负载，与未来的通用宽带分组无线电接入的应用的目的。我们应用12 × 12 MIMO复用使用最大似然检测采用QR分解和M算法（QRM-MLD）与自适应选择的幸存符号副本候选人（ASESS），64 QAM数据调制，和Turbo编码的编码率R = 8/9，以实现极高的频率效率水平。在横须贺市横须贺研究园（YRP）区进行的现场实验中，我们表明，4.92 Gbps的测量吞吐量是在平均接收SNR每个接收器天线约28.0和28.5 dB时，接收器天线间距为40厘米（6.2lambda），和10厘米（1.5lambda），平均速度为10公里/小时，分别实现。
This paper presents indoor and field experimental results on extremely high-speed packet transmissions of 4.92 Gbps in a 100-MHz channel bandwidth, i.e., the frequency efficiency of approximately 50 bit/second/Hz, in the downlink orthogonal frequency division multiplexing (OFDM) radio access. The required received signal-to-noise power ratio (SNR) is less than 30 dB, which approaches the almost upper limit in cellular environments near a cell site even with a light channel load, with the aim of the application to future universal broadband packet radio access. We apply 12-by-12 MIMO multiplexing using the maximum likelihood detection employing QR decomposition and the M-algorithm (QRM-MLD) with adaptive selection of the surviving symbol replica candidates (ASESS), 64QAM data modulation, and turbo coding with the coding rate of R = 8/9 to achieve an extremely high frequency efficiency level. In the field experiments conducted in the Yokosuka Research Park (YRP) district of Yokosuka city, we show that the measured throughput of 4.92 Gbps is achieved at the average received SNR per receiver antenna of approximately 28.0 and 28.5 dB when the receiver antenna spacing is 40 cm (6.2lambda), and 10 cm (1.5lambda) at the average speed of 10 km/h, respectively.