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一种SC-FDE散射通信系统的MIMO技术方案
引用本文:徐信,宋志群,蔡跃明,刘利强.一种SC-FDE散射通信系统的MIMO技术方案[J].无线电通信技术,2009,35(6):4-6,52.
作者姓名:徐信  宋志群  蔡跃明  刘利强
作者单位:1. 中国电子科技集团公司第五十四研究所,河北,石家庄,050081;解放军理工大学通信工程学院,江苏,南京,210007
2. 中国电子科技集团公司第五十四研究所,河北,石家庄,050081
3. 解放军理工大学通信工程学院,江苏,南京,210007
摘    要:在使用2付发射天线、2付接收天线和2个发射频率的传统散射通信系统基础上,提出了一种应用于单载波频域均衡(SC-FDE)散射通信系统的多输入多输出(MIMO)技术方案,可以在保证4重分集的情况下提供2倍的数据传输速率。提出的MIMO技术方案只需在发射端增加2部发射机,不需改变接收机的射频支路结构,具有实现简单的优点。仿真表明,提出的MIMO技术方案在无信道编译码时的误比特率(BER)性能比相应的传统分集系统性能恶化约1.9dB,在进行(64,57)(64,57)Turbo乘积码编译码时的性能恶化只有1.6dB,因此,与使用单独的2套传统分集系统提供2倍的数据传输速率相比,分别具有1.1dB和1.4dB的功率增益,而且具有体积小、成本低的优点。

关 键 词:散射通信  多输入多输出  单载波频域均衡  检测  分集

A Multiple-input Multiple-output Scheme for Troposcatter Communication Systems Frequency Domain Equalization
XU Xin,SONG Zhi-qun,CAI Yue-ming,LIU Li-qiang.A Multiple-input Multiple-output Scheme for Troposcatter Communication Systems Frequency Domain Equalization[J].Radio Communications Technology,2009,35(6):4-6,52.
Authors:XU Xin  SONG Zhi-qun  CAI Yue-ming  LIU Li-qiang
Affiliation:XU Xin, SONG Zhi-qun, CAI Yue-ming, LIU Li-qiang ( 1. The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China; 2. Institute of Communications Engineering, PLAUST, Nanjing Jiangsu 210007, China)
Abstract:A Multiple-Input Mnltiple-Output (MIMO) communication scheme, which can be used in troposcatter communication systems with single carrier modulation and Frequency Domain Equalization (FDE), is proposed. This scheme can provide double data rates as well as four-fold diversity relative to the conventional troposcatter communication system with two transmitter and receiver antennas and two different transmit frequencies. It only requires a new baseband modulator and demodulator, two additional radio frequency (RF) transmitters. And there is no change on the RF branches of the receivers.Simulation results show that the MIMO scheme with no FEC and (64,57) (64,57) TPC have 1. 1 dB and 1. 4 dB power gains than using two individual conventional troposcatter communication systems. It can also offer double data rates, respectively.
Keywords:troposcatter communications  Multiple-Input Multiple-Output(MIMO)  single carrier frequency domain equalization(SC-FDE)  detection  diversity
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