【摘要】 分析了混合功率速率自适应系统在综合业务 CDMA通信中的性能。数据速率和发射功率按照信道变化自适应调节。对于要求恒定比特速率的话音业务 ,可以采用功率自适应 ,而对数据业务采用速率自适应 ,因为数据业务能够容忍一定的时延。分析结果表明 ,在保持同样的速率和误比特率前提下 ,这种自适应方法比传统的功率自适应有明显的功率增益 ,从而提高了系统容量更多还原

【Abstract】 A combined power and rate adaptation in integrated service CDMA communications is considered. The data rate and transmission power is adapted relative to channel variations. For voice service which require constant bit rate, the power adaptation is used. While for data service, the rate adaptation is used, since data service can tolerate some delay. The analysis results show that this adaptation scheme has a power gain, also a capacity gain, over conventional power adaptation, while maintaining the same average data rates and BER requirements.更多还原