摘要
将差分编码方案引入到跳相发射分集系统中,提出了跳相差分空时编码(PHDSTBC)方案,该方案有效地改善了整个系统中的差错性能和时延。同时,伪随机的相位跳变大大增强了系统的保密性及干扰对抗性,提高了系统抗突发错误和深度衰落的能力。仿真结果表明,在准静态Rayleigh信道下,误码率为10-3时,新方案相比TarokhJafarkhani差分空时方案(TJDSTBC)性能有1.5dB的信噪比增益。
The differential coding scheme is introduced in the phase hopping transmit diversity system, and the phase hopping and differential space-time block coding （PH-DSTBC） scheme is presented. The scheme effectively improves the BER performance and reduces the time delay, Moreover, the random phase hopping greatly enhances the security and anti-jamming of the system, improves the ability of resisting the burst error and deep fading, The simulation results show that new scheme performs better than TJ-DSTBC by 1.5 dB RSN gain at bit error rate of 10^-3 over Rayleigh channels.
出处
《无线电通信技术》
2006年第4期16-18,29,共4页
Radio Communications Technology
关键词
差分
跳相
发射分集
空时编码
differential
phase hopping
transmit diversity
space-time coding
