本論文是在M階脈衝位置調變跳時、跳時M階脈衝位置調變、多脈衝跳時M階脈衝位置調變三個跳時超寬頻系統上做多用戶偵測以減少多址接取干擾。在此使用三種多用戶偵測技術，分別為串行干擾消除、串行干擾消除結合比率閾值測試及遞迴式干擾消除結合比率閾值測試。最後，三個跳時系統會在可加性白高斯雜訊及CM1的通道下進行模擬。模擬結果發現串行干擾消除結合比率閾值測試效能優於串行干擾消除和遞迴式干擾消除結合比率閾值測試。多脈衝跳時M階脈衝位置調變系統效能比M階脈衝位置調變跳時和跳時M階脈衝位置調變系統為佳。

This thesis proposed multiuser detection technology for three time hopping UWB systems of MPPM-TH-UWB, TH-MPPM-UWB and MP-TH-MPPM-UWB to cancel the multiple access interference. Use three kinds of multiuser detection algorithms which are SIC, SIC-RTT and ICC-RTT in these systems over AWGN channel and CM1 channel. Simulation results show that SIC-RTT algorithm is better than SIC and IIC-RTT algorithms in these time hopping systems. The comparisons obviously show the MP-TH-MPPM-UWB system outperform the MPPM-TH-UWB and the MP-MPPM-TH-UWB systems.

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