Adaptive iterative bit allocation algorithm for MIMO-OFDM system

FAN Ling-yan1; HE Chen2; FENG Guo-rui3

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Adaptive iterative bit allocation algorithm for MIMO-OFDM system

更新时间：2024-10-14

- Adaptive iterative bit allocation algorithm for MIMO-OFDM system
- Issue 11, Pages: 65-70(2007)
- 作者机构：
  
  1. 杭州电子科技大学电子信息学院
  2. 上海交通大学电子工程系 3. 华东师范大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919.3
- Published：2007
- 稿件说明：
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FAN Ling-yan1, HE Chen2, FENG Guo-rui3. Adaptive iterative bit allocation algorithm for MIMO-OFDM system[J]. 2007, (11): 65-70.
DOI：

FAN Ling-yan1, HE Chen2, FENG Guo-rui3. Adaptive iterative bit allocation algorithm for MIMO-OFDM system[J]. 2007, (11): 65-70. DOI：

摘要

针对多输入多输出正交频分复用(MIMO-OFDM)系统提出了一种自适应迭代的调制方案。考虑实际通信系统的要求

在通信上层传输速率和误码率要求一定的情况下

以最小化发射功率为目标

在发射端采用自适应迭代的方法给每个空间子信道分配传输比特、发射功率。在满足用户要求的同时

获得了好的频谱效率

节省了发射功率。并且

采用迭代的方法解决了因发射比特必须取整引起的误差。相比与同类算法

可大大降低计算复杂度。计算机仿真表明提出的方法可以用低的发射功率达到用户要求。

Abstract

The adaptive iterative modulation was proposed for multiple-input-multiple-output-orthogonal frequency divi-sion multiplexed（MIMO-OFDM） system.An adaptive minimum transmit power modulation scheme under constant data rate and fixed bit error rate（BER） for the MIMO-OFDM system was proposed to adjust the modulation order and allo-cates the transmit power to each spatial sub-channel by iterative method considering the requirement of the practical communication system.It can meet the user’s requirements and get better freguency efficiency at the cost of minimum transmission power.And it can avoid the error by round the modulation order.Computer simulation results present the ef-ficiency of the proposed scheme.

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