This paper proposed a modulation recognition algorithm for M-QAM signals.
提出了一种M - QAM信号的识别算法。
At the same time, M-QAM mapping can be used in OFDM for improving data transportation speed.
同时在OFDM调制时可以采用M - QAM映射方式，提高短波跳频系统的信息传输速率。
Following is an analytical expression to calculate the BER of M-QAM under Rayleigh channel when channel estimation error exists.
提出了计算瑞利信道下存在信道估计误差时m - QAM的误比特率的解析表达式。
A new simplified soft-output demapping algorithm for M-QAM is proposed in this paper, and the method is expanded to unsymmetric 2-D QAM demapping such as 32-QAM in DTMB.
提出了一种适用于所有M-QAM软判决解映射的简化算法，并将其扩展到不对称的二维QAM解映射中，如DTMB中的32-QAM。
A new simplified soft-output demapping algorithm for M-QAM is proposed in this paper, and the method is expanded to unsymmetric 2-D QAM demapping such as 32-QAM in DTMB.
提出了一种适用于所有M-QAM软判决解映射的简化算法，并将其扩展到不对称的二维QAM解映射中，如DTMB中的32-QAM。
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