Channel Parameter Estimation for Scatter Cluster Model Using Modified MUSIC Algorithm
Recently, the scatter cluster models which precisely evaluate the performance of the wireless communication system have been proposed in the literature. However, the conventional SAGE algorithm does not work for these scatter cluster-based models because it performs poorly when the transmit signals are highly correlated. In this paper, the authors estimate the Time Of Arrival (TOA), the Direction Of Arrival (DOA), and Doppler frequency for scatter cluster model by the modified MUltiple SIgnal Classification (MUSIC) algorithm. Using the space-time characteristics of the multiray channel, the proposed algorithm combines the temporal filtering techniques and the spatial smoothing techniques to isolate and estimate the incoming rays.