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卫星和光缆──是敌还是友？赵兴生ＣＴ—２选定的编码方式为自适应差分及脉冲编码调制方式，即ＡＤＰＣＭ。但ＣＡＩ规定允许手机采用降低规范的ＡＤＰＣＭ，主要原因是这种编解码算法比较复杂且电池功耗较大，当然整个话音通道必须满足规定的主客观输测试要求。传输计划...
Satellite and fiber optic cable ─ ─ is the enemy or friend? Zhao Xingsheng CT-2 selected coding method for adaptive differential and pulse coding modulation, that ADPCM. However, the CAI regulation allows the handset to adopt a reduced specification of ADPCM mainly because the coding and decoding algorithm is complex and the battery consumes a large amount of power. Of course, the entire voice channel must meet the specified subjective and objective transmission test requirements. Transmission plan ...