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。
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.
出处
《无线电通信技术》
2009年第6期4-6,52,共4页
Radio Communications Technology
关键词
散射通信
多输入多输出
单载波频域均衡
检测
分集
troposcatter communications
Multiple-Input Multiple-Output（MIMO）
single carrier frequency domain equalization（SC-FDE）
detection
diversity
