| 摘要: |
| 针对采用高阶调制的正交频分复用（OFDM）系统在前端模拟处理过程中易遭受到同
相相位和正交相位（IQ）不平衡影响的问题，提出了一种新的OFDM WLAN系统接收机IQ不平
衡估计和补偿方法。该方法利用较少的时域训练序列进行IQ不平衡参数的估计及补偿。仿真
结果表明，该方法在降低了计算复杂度的同时，也获得了较好的估计性能。 |
| 关键词: 正交频分复用 无线局域网 IQ不平衡 时域补偿 低复杂度 |
| DOI： |
|
| 基金项目:国家科技重大专项（2012ZX03001025） |
|
| A new time-domain compensation scheme of IQ imbalance in OFDM WLAN receivers |
| WANG Xuan-hong,LU Guang-yue |
| () |
| Abstract: |
| For the question that Orthogonal Frequency Division Multiplex (OFDM) using a hig
h-order modulation suffers from serious effects of In-phase and Quadrat
e-phase (IQ) imbalance in a front-end analog processing, a new IQ imbalance es
timation and compensation method is proposed for OFDM WLAN receivers. The propos
ed method estimates the IQ imbalance parameters and corrects effect of IQ imbala
nce using fewer time-domain training signals. The simulation results show that
the proposed scheme is very simple and robust. |
| Key words: OFDM WLAN IQ-imbalance time-domain compensation low complexity |
