由于传输环境的剧烈变化，移动通信系统不能工作在最佳的信源编码速率和信道编码速率。
Due to the intense change of the transmission environment, the mobile communication system can not work in the optimal source coding rate and channel coding rate.
由于传输环境的剧烈变化，移动通信系统不能工作在最佳的信源编码速率和信道编码速率。
Due to the intense change of the transmission environment, the mobile communication system can not work in the optimal source coding rate and channel coding rate.
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