连续可变斜率增量调制的语音编码可以在高误码率的情况下正常工作。
CVSD (Continuous Variable Slope Delta Modulation) voice coding enables.
给出了当输入信号为等概率的四进制脉冲幅值调制（PAM）时，系统输出理论渐近误码率计算公式。
Furthermore, the expression of stationary bit error rate of system output corresponding to equiprobability quaternary pulse amplitude modulation (PAM) input signals was deduced.
以多进制相位调制方式采用这种波形结构进行了仿真实验和湖水试验，都获得了比传统的波形结构更低的误码率。
Emulate experiments and lake experiment obtained lower error code rate than traditional waveform design method using this waveform structure with multiple phase shift key modulation.
理论推导和仿真结果表明，COFDM调制技术适合在高压电力线载波通信中使用，在明显的提高数据传输率的同时降低误码率并增强系统可靠性。
Proved by the theoretic deriving and simulation result, the COFDM modulation technology is well suitable for high voltage PLC with a high transmission speed, low BER and high reliability.
从精确成对错误概率(PEP)出发，推导得到了DUST调制群码符号误码率(sep)的联合边界。
Starting from the precise pair-wise error probability (PEP), the joint border of group coding signal error probability (SEP) in differential unitary space-time (DUST) modulation is deduced.
实践证明，以扩频调制、解调为基础的电力线载波通信方案可获得较高的通信速率和较低的误码率。
It has been proved in reality that a PLCC based on spreading spectrum modulation and demodulation can achieve a higher communicating rate and a lower bit error rate.
自适应调制能提高系统的频谱利用率和改善系统的误码率性能。
Adaptive modulation can improve the system performance with high spectral efficiency.
自适应调制能提高系统的频谱利用率和改善系统的误码率性能。
Adaptive modulation can improve the system performance with high spectral efficiency.
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