基于解调判决的信噪比估计方法

在无线通信中,信噪比作为衡量信道质量的标准,为信道分配提供所需的信道质量信息。针对实时信道分配,提出一种基于解调判决的信噪比估计方法,直接利用解调信号的判决值计算出所叠加的噪声值,以减少信噪比估计的运算时间损耗。最后进行仿真验证,并与已有方法进行性能比较。仿真结果表明,该方法在整体性能没有下降的同时,可以用较少的接收信号序列得到相同的估计精度,具有较好的实时性能。

SNR Estimation Method based on Demodulation Decision

In wireless communication,signal-to-noise ratio(SNR),as a standard of the channel quality,provides the channel quality,information for channel assignment.For real-time channel assignment and for reducing the time consuming,a SNR estimation method based on the demodulation decision is proposed,and the noise is calculated directly from the demodulated signals,thus reducing the operation time-consumption.Finally,the simulation verification and its comparison with other existing methods are done.The simulation ...