In this paper, an optimal multi user detector in DS/CDMA communication systems based on the mean field annealing (MFA) neural network is proposed. It is shown that the NP complete problem of minimizing the objective...
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In this paper, an optimal multi user detector in DS/CDMA communication systems based on the mean field annealing (MFA) neural network is proposed. It is shown that the NP complete problem of minimizing the objective function of the optimal multi user detector can be translated into minimizing an MFA network energy function. Numerical results show that the proposed detector offers significant performance gain relative to the conventional detector and decorrelating detector while it can be implemented easily in analog hardware.
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。
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