We study information capacities of quantum channels with special emphasis on quantum Gaussion channels.
量子信道特别是量子高斯信道容量具有重要的信息论意义。
By comparison with the analytical results, Gaussion approximation method tends to overestimate the BER whose application is restricted within narrow limits.
通过比较，说明高斯近似法估算的误码率过大，故其应用范围受到限制。
For the radiation noises from underwater targets apparently contain non-Gaussian ingredients, their non-Gaussion features were studied through high-order cumulants.
以大量的水下目标辐射噪声资料为依托，借助高阶累积量分析法，研究了目标信号的非高斯特性。
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