Novel SNR estimation based on TD-LTE systems
基于TD-LTE系统的新型信噪比估计算法

Based on the character, mapping to resource elements in frequence domain and adding noise in time domain, in TD-LTE systems, this paper presented signal to noise ratio SNR estimation algorithm by using separating noise from received signal in frequency domain to estimate noise average power. What is more, non-data estimation M2M4 was extended to the systems of TD-LTE . Finally, simulation result shows that extended M2M4 algorithm can be used in AWGN channel model, and the novel algorithm not only has more accurately estimate SNR, but also can satisfy performance requirement under different channel environment. The method had been applied to LTE-TDD wireless integrated test instrument development.