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在提供多媒体业务的3G系统中,不同的业务传输速率在传输过程中是可变的,可用功率速率联合控制来处理第三代移动通信系统中的无线资源分配问题。在可变扩频增益CDMA系统中,用户根据其无线环境确定其传输速率和发射功率,基于博弈论提出了使用户净吞吐量最大化的功率速率联合控制方案。对信干比要求不严格的业务,可依照一定的概率来决定是否调整用户数据传输速率,仿真表明,这样可使用户的传输速率进一步提高,更有效地利用系统资源。
In the 3G system providing multimedia services, the transmission rates of different services are variable during the transmission. Joint control of power rates can be used to handle the radio resource allocation problem in the 3G mobile communication system. In variable-spreading gain CDMA system, users determine their transmission rate and transmission power according to their wireless environment. Based on game theory, a joint power rate control scheme is proposed to maximize the net throughput of users. The service that is not strict on the SINR can decide whether to adjust the user data transmission rate according to a certain probability. The simulation shows that this can further improve the user transmission rate and make more efficient use of system resources.