PMCAP/CDMA系统中一种新的多址干扰控制技术
A New MAI Control Method in PMCAP/CDMA Networks
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摘要: 多址干扰(MAI)是限制CDMA系统容量的瓶颈，而在无线通信系统中，为了实现数据的高速无差错传输，混合ARQ已经得到越来越多的应用。该文利用第二类混合ARQ(HARQ type-II)中每次重传的数据分组有不同的纠错能力和抗多址能力的特性，提出了一种新的联合区分多址干扰控制方法。仿真结果显示该方法在CDMA系统中有比传统方法更好的性能。Abstract: Multiple Access Interference(MAI) is a well-known bottleneck which limits the capacity of CDMA systems, and as is known to all, hybrid ARQ has been widely used in wireless communication systems to support error free high rate data transmission. A combined differentiated MAI control scheme for CDMA networks with hybrid ARQ type-II is proposed in this paper, taking into account that different trials of data packets have different error-correcting capabilities against MAI and largely different quantities. Simulation shows that this method has better delay and throughput performance than traditional MAI control methods.
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