采用编码调制提高部分响应信号的能量效率

2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom) Pub Date : 2015-05-18 DOI:10.1109/BlackSeaCom.2015.7185086

A. Gorlov, A. Gelgor, Evgenii Popov

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引用次数: 6

摘要

提高带宽效率的最流行的方法之一是使用具有符号间干扰(ISI)的信号。本文结合4-QAM、8-QAM和16-QAM信号星座和递归系统卷积码，分析了带宽高效部分响应信号(PRS)。采用最优PRS对编码数据在AWGN信道中的传输进行了仿真，每个脉冲形状在选定的星座和带宽下给出了最大的自由欧氏距离。此外，我们采用迭代接收器(或turbo均衡器)来检测和解码这些信号。结果表明，编码后的PRS在带宽和能量特性上都超过了栅格编码调制，达到了turbo栅格编码调制。

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Improving energy efficiency of partial response signals by using coded modulation

One of the most popular approaches to improving bandwidth efficiency is the use of signals with inter-symbol interference (ISI). In this paper bandwidth-efficient partial response signals (PRS) are analyzed in combinations with 4-QAM, 8-QAM and 16-QAM signal constellations and recursive systematic convolutional codes. We simulated transmission of encoded data through AWGN channel using the optimal PRS, each pulse shape gave maximal free Euclidean distance for chosen constellation and bandwidth. Also, we employed iterative receiver (or turbo equalizer) for detection and decoding of these signals. It is shown that the coded PRS exceed trellis-coded modulation and reach turbo trellis-coded modulation in bandwidth and energy characteristics.

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2015 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom)

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