摘要
低信噪比下无线传输的同步较困难,需要用于做同步估计的数据量较大;而短突发传输的信号持续时间较短,数据量较少。针对极低信噪比条件下的短突发传输,提出了采用并行导频的方法。其导频不占用任何时间开销,大大缩短了突发传输时间。分别针对加性高斯白噪声信道和多径衰落信道,给出了导频的作用和对应的导频图样,通过仿真验证了所提导频方案的可行性和性能。
In order to reduce the signal support length of burst transmission under low signal-to-noise environment, an approach of parallel pilot pattern is proposed in this paper.The channels are classified into two categories： Additive White Gaussian Noise channel and muhipath fading channel.For the two categories of channels,pilot patterns and their functions are proposed respectively for short burst transmission.Simulations employed have verified the feasibility and performance of the proposed pilot patterns.
出处
《无线电通信技术》
2015年第6期50-53,共4页
Radio Communications Technology
关键词
突发传输
极低码率
极低信噪比
short burst transmission
low code rate
Signal to Noise Ratio.
