PMCAP/CDMA系統(tǒng)中一種新的多址干擾控制技術(shù)
A New MAI Control Method in PMCAP/CDMA Networks
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摘要: 多址干擾(MAI)是限制CDMA系統(tǒng)容量的瓶頸，而在無線通信系統(tǒng)中，為了實現(xiàn)數(shù)據(jù)的高速無差錯傳輸，混合ARQ已經(jīng)得到越來越多的應(yīng)用。該文利用第二類混合ARQ(HARQ type-II)中每次重傳的數(shù)據(jù)分組有不同的糾錯能力和抗多址能力的特性，提出了一種新的聯(lián)合區(qū)分多址干擾控制方法。仿真結(jié)果顯示該方法在CDMA系統(tǒng)中有比傳統(tǒng)方法更好的性能。
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關(guān)鍵詞:
- 碼分多址;混合ARQ;多址干擾;聯(lián)合區(qū)分多址干擾控制
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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