以下为句子列表：
英文: A sheme of two code-rates TCM-QAM with high coding gain is presented, its signals space is mapping for 90° rotationally invariant codes(RIC).
中文: 摘要提出了一种适用于慢变通道的双码率TCM-QAM系统方案，该方案有较高的编码增益，同时满足90°旋转不变要求。
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英文: In this paper, the form and detection of phase noise is presented and the effect of phase noise in QAM modulation is analyzed.
中文: 摘要分析了相位噪声的成因、测量以及相位噪声对系统的影响。
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