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应用科学学报 ›› 2003, Vol. 21 ›› Issue (2): 182-186.

• 论文 • 上一篇    下一篇

一种低复杂度的数字调幅广播调制方式

束锋1,2, 李重仪1, 赵光玲2, 吴乐南2   

  1. 1 明基电通信息技术有限公司南京研发中心 江苏 南京 210024;
    2 东南大学无线电工程系 江苏 南京 210096
  • 收稿日期:2001-10-13 修回日期:2002-09-10 出版日期:2003-06-10 发布日期:2003-06-10
  • 作者简介:束锋(1973-),男,安徽桐城人,工程师,博士;吴乐南(1952-),男,安徽极阳人,教授,博导.
  • 基金资助:
    国家自然科学基金(60072013)

A Low-Complexity Modulation Scheme for DAMB

SHU Feng1,2, LI Chong-yi1, ZHAO Guang-ling2, WU Le-Nan2   

  1. 1 Nanjing R & D center, BENQ China Co., Ltd., Nanjing 210024, China;
    2 Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2001-10-13 Revised:2002-09-10 Online:2003-06-10 Published:2003-06-10

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124

被引次数

2

摘要： 提出一种低复杂度的数字调幅广播调制方式——32DAPSK+OFDM.该方式能有效地降低数字广播接收机复杂度.首先给出30MHz以下频段(调幅广播波段)信道模型和基于OFDM数字调幅广播系统的等效基带模型,然后讨论32DAPSK+OFDM的调制、解调以及在白高斯信道的误比特性能。最后仿真32DAPSK+OFDM在调幅广播信道的误比特性能。

关键词: 正交频分复用, 差分幅度相位调制, 多级码, 数字调幅广播

Abstract: The time-domain DAPSK+OFDM is proposed for digital amplitude modulation broadcast (DAMB), which offers a low-complexity uncoded modulation scheme. First, the AM channel model below 30MHz is described, and the baseband model based on the OFDM system is shown. Next, the modulation, demodulation and BER performance of 32DAPSK4-OFDM are investigated in AWGN channel. Finally, the BER performance of 32DAPSK + OFDM is simulated in all the AM channels.

Key words: digital amplitude modulation broadcast, orthogonal frequency division multiplexing, differential amplitude phase shift keying, multilevel code

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