Data Capacity of ATCMQAM in Cellular System

LI Xia; LI Jian-dong

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Data Capacity of ATCMQAM in Cellular System

更新时间：2025-07-16

- Data Capacity of ATCMQAM in Cellular System
- Acta Electronica Sinica Vol. 29, Issue 10, Pages: 1310-1313(2001)
- 作者机构：
  
  西安电子科技大学ISN国家重点实验室信息科学研究所,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914.3
- Published：2001
- 稿件说明：
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LI Xia, LI Jian-dong. Data Capacity of ATCMQAM in Cellular System[J]. Acta Electronica Sinica, 2001, 29(10): 1310-1313.
DOI：

LI Xia, LI Jian-dong. Data Capacity of ATCMQAM in Cellular System[J]. Acta Electronica Sinica, 2001, 29(10): 1310-1313. DOI：

摘要

本文提出一种将引导码元辅助调制(PSAM:Pilot Symbol Assisted Modulation)与基于M-QAM的自适应TCM调制(ATCMQAM)相结合的自适应传输体制.同时建立了一个基于TDMA/FDMA蜂窝小区的数据容量解析模型来分析该体制的性能.数值仿真结果表明:信噪比估计误差小于3dB

归一化运动距离小于0.4

λ(λ

载波波长)时

该体制的数据容量比固定方式4PSK提高80%.

Abstract

An adaptive transmission scheme based on PSAM (Pilot Symbol Assisted Modulation) and Adaptive Trellis-Coded M-ary QAM (ATCMQAM) is proposed in this paper.In the following

an analytical model of data capacity in TDMA/FDMA cellular systems is developed for the performance simulation of the scheme.It is shown by simulation result that data capacity of ATCMQAM is 1.8 times that of fixed modulation with 4PSK employed if estimation error is within 3dB and normalized moving distance in a packet period is shorter than 0.4λ with λ being carrier wave length.

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