Non-ideal SSS Coherent Detection in 3GPP LTE System

In the LTE system, SSS coherent detection is one of the commonly used methods. However, Theoretical analysis of the performance of non-ideal coherent detection is rarely seen. Properly modeling the Doppler Effect and channel estimation error, the paper focuses on the mathematic deduction of nonideal SSS coherent detection performance, which was approved by simulations. SSS coherent detection performance in TDD/FDD systems is compared with non-coherent detection methods under various assumptions of channel estimation error, which provides a basis for choosing SSS detection methods in a practical system. Keywords-LTE; SSS; coherent detection; non-coherent detecton; non-ideal