基于截断功率控制和截断ARQ的蜂窝CDMA软切换分组数据性能研究

2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems Pub Date : 2008-12-01 DOI:10.1109/ICIINFS.2008.4798391

S. Roy, D. Das, S. Kundu

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引用次数: 2

摘要

分析了在软切换和截断功率控制下蜂窝CDMA分组数据传输的性能。在规定的时延约束下，研究了软切换参数、物理层截断功率控制和数据链路层截断ARQ对分组数据吞吐量和时延性能的综合影响。截断功率控制通过在软切换下暂停移动设备的传输来提高性能，并通过链路层重传来进一步提高性能。研究了一种可变包长方案，在不同的流量和软切换条件下调整包的大小，以保持与T-ARQ相关的规定的丢包水平。研究了功率截断参数和软切换参数之间的相互作用及其对数据性能的影响。

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Performance of Packet Data with Truncated Power Control and Truncated ARQ in Presence of Soft Handoff in Cellular CDMA

Performance of a packetized data transmission in cellular CDMA is analyzed in presence of soft handoff and truncated power control. The combined effects of soft handoff parameters, truncated power control at physical layer and truncated ARQ at data link layer on throughput and delay performance of packet data under a prescribed delay constrain is studied. Truncated power control improves the performance by suspending transmissions of mobiles under deep fade along with soft handoff while further improvement is obtained by retransmission at link layer. A variable packet length scheme is studied where packet size is adjusted under different traffic and soft handoff conditions so as to maintain a prescribed level of packet loss associated with T-ARQ. Interactions between power truncation parameter and soft handoff parameters and their impact on data performance are investigated.

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2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems

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