Analysis of Reverse Link Capacity Enhancement for CDMA Cellular Systems Using Two-Hop Relaying(Reverse Link Capacity for CDMA Cellular)(<Special Section>Multi-dimensional Mobile Information Networks)
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概要
- 論文の詳細を見る
A routing algorithm, utilizing two-hop relaying when necessary, is proposed to enhance the system capacity of code division multiple access (CDMA) cellular systems. Up to now, multihop relaying is applied to cellular systems mainly with the aim of decreasing the transmit power of each mobile station or extending the cell coverage area. Here, in this paper, potential benefit of multihop relaying is studied so as to increase the system capacity. A condition for the interference to be reduced by changing single-hop connections to two-hop connections is analyzed. In addition, a new route selection criterion maximizing the amount of interference reduction is proposed. Simulation results reveal that the proposed criterion is superior to the conventional criterion minimizing the total transmit power in respect of the amount of interference reduction. By using this criterion, an efficient routing algorithm for two-hop CDMA cellular systems is proposed to enhance the system capacity. Simulation results also indicate that by using the proposed routing algorithm in combination with a call admission control, the system capacity is increased even under heavy traffic conditions.
- 一般社団法人電子情報通信学会の論文
- 2004-07-01
著者
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Yamamoto Koji
Graduate School Of Informatics Kyoto University
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Yoshida Susumu
Graduate School Of Informatics Eyoto University
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