Abstract:

The coexistence problem between M-WiMAX and WCDMA systems is discussed. To reduce the interference from M-WiMAX system to WCDMA system, the transmit beamforming technique is applied. At the same time, we propose an adjacent channel interference model to analyze the gain induced by the appication of transmit beamforming technique. In addtion, we propose a novel sub-channel allocation algorithm to increase the throughput of M-WiMAX system. To verify the proposed algorithms, we build up a system-level simulation platform and use the Monte Carlo method to evaluate.

Key words: WCDMA, adjacent channel interference modeling, transmit beamforming, aggressive sub-channel allocation