一個新的分散定步長功率控制算法
A New Distributed Fixed-Step Power Control Algorithm
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摘要: 功率控制是CDMA蜂窩移動通信系統(tǒng)的關(guān)鍵技術(shù)之一。該文考慮CDMA蜂窩移動系統(tǒng)，在假設(shè)系統(tǒng)信道增益時變、有界的情形下，把一個時變系統(tǒng)功率控制問題轉(zhuǎn)化為具有確定信道增益功率控制問題。提出了一個分散定步長反饋調(diào)節(jié)功率控制算法，并證明了算法的收斂性。仿真結(jié)果表明算法是可行的。
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關(guān)鍵詞:
- 無線通信;功率控制;信道增益;噪聲;蜂窩系統(tǒng)
Abstract: Power control is one of the key technologies for CDMA cellular mobile systems. In this paper, a distributed fixed-step power control algorithm is presented for CDMA cellular mobile systems. The power control problem of time-varying systems is converted to the power control problem with fixed-channel gain under the assumption that the system channel gain is time-varying and bounded. Convergence of the algorithm proposed in this paper is proved. Some simulations are given to show the effecicency of the algorithm. -
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