一種新的分布式功率控制算法
A New Distributed Power Control Algorithm
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摘要: 該文首先提出改進的分布式功率控制(IDPC)算法的原型算法,再進一步以分布式實現(xiàn)該原 型算法,從而最終得到IDPC算法。該文還對不同的分布式功率控制算法做了理論分析及仿真比較,最終得出了IDPC算法具有很快的收斂速度和優(yōu)越的中斷性能的結論。
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關鍵詞:
- 功率控制; CDMA; 中斷概率
Abstract: This paper first proposes the prototype algorithm of an improved distributed power control (IDPC). In this algorithm, mobile units adjust their transmitter powers ac-cording to not only their power levels at last iterative step but also the largest and second smallest eigenvalues of the link gain matrix at current time instant. As for the prototype algorithm, link gains for all mobile units must be measured and large burden may be brought in at base stations. For this reason, the prototype algorithm is developed further in a dis-tributed way and thus lead to IDPC algorithm, in which both the positive receiver noise and constrained transmitter power are also considered. As a result, with IDPC algorithm, the CIRs are balanced quickly and a superior outage performance to other algorithms is reached. -
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