Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems

GAO Zhen1; PENG Ke-wu2; PAN Chang-yong2

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Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems

更新时间：2024-10-14

- Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems
- Vol. 30, Issue 7, Pages: 111-117(2009)
- 作者机构：
  
  1. 天津大学电子信息工程学院
  2. 清华大学信息科学与技术国家实验室(筹)
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.3
- Published：2009
- 稿件说明：
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GAO Zhen1, PENG Ke-wu2, PAN Chang-yong2. Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems[J]. 2009, 30(7): 111-117.
DOI：

GAO Zhen1, PENG Ke-wu2, PAN Chang-yong2. Simulation and measurement of multi-carrier and single-carrier frequency domain equalization systems[J]. 2009, 30(7): 111-117. DOI：

摘要

我国数字电视地面广播传输标准GB20600-2006(以下简称国标)兼容多载波正交频分复用(OFDM)和单载波频域均衡(SC-FDE)2种块传输技术。为了在国标框架下对2种传输技术的抗频率选择性衰落性能进行比较

根据国标的系统参数对采用低密度奇偶校验码(LDPC)的OFDM和SC-FDE传输系统进行了仿真

并对国标实际系统进行了测量。仿真和实测结果均表明:在LDPC编码系统中

OFDM的抗频率选择性衰落性能好于SC-FDE系统

且随着信道频率选择性衰落的恶化和调制级别的提高

这种优势会更加明显。此仿真和实测结果可以为国标系统的实现与优化提供参考。

Abstract

Chinese national standard of digital terrestrial Television broadcasting（DTTB） was a block transmission system in which the orthogonal frequency-division multiplexing（OFDM） and single-carrier frequency domain equalization（SC-FDE） transmission technologies were compatible.In order to compare the performance of these two technologies over frequency selective fading channel

OFDM and SC-FDE systems using low density parity check code（LDPC） were simulated.Moreover

laboratory tests were carried out to measure the performance of the actual DTTB system.Both the simulation and measurement results show that for the LDPC coded system

OFDM outperforms SC-FDE over frequency-selective fading channels

and the advantage of OFDM becomes more obvious with the deterioration of the fading channel and/or increase of the modulation level.The results are expected to be helpful for the design and optimization of the Chinese DTTB system.

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