论文标题
通过旋转信号星座传输额外的位
Transmitting Extra Bits by Rotating Signal Constellations
论文作者
论文摘要
在这封信中，我们提出了一种新型的LDPC编码方案，以通过旋转信号星座在没有任何额外的传输功率或带宽成本的情况下传输额外的位。在提出的方案中，LDPC编码的数据由旋转的二维信号星座调节，其中旋转角由给定的额外位指定。在接收器，借助LDPC代码综合征的统计学习估计旋转角度。恢复旋转角度后，可以由LDPC解码器解码编码的有效载荷数据。仿真结果表明，对于LDPC长度为2304的LDPC代码，最多可以通过对LDPC编码数据的可靠性的影响来传输多达四个额外的位。
In this letter, we propose a novel LDPC coding scheme to transmit extra bits aided by rotated signal constellations without any additional cost in transmission power or bandwidth. In the proposed scheme, the LDPC coded data are modulated by a rotated two-dimensional signal constellation, in which the rotation angle is specified by the given extra bits. At the receiver, the rotation angle is estimated with the aid of the statistical learning of the syndrome of the LDPC code. After recovering the rotation angle, the coded payload data can be decoded by the LDPC decoder. The simulation results show that, for an LDPC code of length 2304, up to four extra bits can be transmitted with negligible influence on the reliability of the LDPC coded data.
