A brief introduction of principles and algorithm realization of uplink power control in CDMA mobile communication system based on IS 95 are given, and then the blocking probability and Erlang capacity under the condi...
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A brief introduction of principles and algorithm realization of uplink power control in CDMA mobile communication system based on IS 95 are given, and then the blocking probability and Erlang capacity under the condition of perfect and imperfect uplink power control are presented and analyzed. Finally the uplink power control algorithms are simulated, and the optimum uplink power control algorithm that maximizes system Erlang capacity is acquired.
1997年度IEEE International Conference on Communications(ICC)于6月8日至12日在加拿大蒙特利尔举行,约500名学者出席会议。会议内容涉及移动通信,信号处理,Internet互连网,ATM/B-ISDN等。 1 QoS 介绍了在高速传输网络多媒体环境中Qo...
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1997年度IEEE International Conference on Communications(ICC)于6月8日至12日在加拿大蒙特利尔举行,约500名学者出席会议。会议内容涉及移动通信,信号处理,Internet互连网,ATM/B-ISDN等。 1 QoS 介绍了在高速传输网络多媒体环境中QoS的研究状况,讨论了QoS在令牌网和ATM网中所存在的问题,显示出ATM具有支持QoS的潜力。以下是QoS值得关注的一些问题。 (1)将系统在网络传输中对QoS的保证程度分为3个不同的级别,即保证满足(guaran-teed)、统计满足(statistical)和尽量满足(best effort)。 (2)QoS管理的概念包括静态管理和动态管理,前者包括QoS对参数的映射和QoS协商、连接接纳控制和资源分配,后者包括QoS维护、计划和再协商。
This paper describes a linear interference cancellation multi user detector for synchronous DS CDMA systems under the condition that all spread spectrum code waveforms have the constant cross correlating coefficien...
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This paper describes a linear interference cancellation multi user detector for synchronous DS CDMA systems under the condition that all spread spectrum code waveforms have the constant cross correlating coefficients. The basic idea is to get the estimation for total multiple access interference (MAI) of all users using a reference code waveform, then subtract the total MAI from the received signal. The structure of such a detector is nearly similar to the conventional detector. The BER expression obtained in the paper shows significant performance improvement compared to the other detectors.
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