CDMA中的半盲恒模算法
Semi-blind Constant Modulus Algorithm for CDMA System
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摘要: 該文研究了應(yīng)用于CDMA上行鏈路多用戶檢測(cè)中的半盲恒模算法。它首先利用非盲算法消除所有小區(qū)內(nèi)干擾用戶的影響,接著再利用盲算法抵消剩余的干擾。通過仿真實(shí)驗(yàn),將之與盲恒模算法及解相關(guān)算法相比較,可以看出在于擾用戶增多時(shí),本文提出的半盲恒模算法的性能明顯優(yōu)于另外兩種算法。
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關(guān)鍵詞:
- CDMA; 多用戶檢測(cè); 半盲恒模
Abstract: The semi-blind Constant Modulus (CM) algorithm which applied in the Multi-User Detection (MUD) of CDMA is studied. This approach fully utilizes all known users information, performs not-blind detector to suppress the interferes within the cell, and exploits blind detector to suppress the inter-cell interference. Compared with the blind CM algorithm and the decorrelating algorithm, the proposed semi-blind CM algorithm exhibits better SIR and BER performances and it is more robust when the system is heavily loaded. -
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