CSI feedback for closed-loop MIMO-OFDM systems based on B-splines

Ren Shian Chen, Ming-Xian Chang

研究成果: Conference contribution

摘要

In this paper, we propose a feedback algorithm based on the B-spline models of channel responses(CRs) variation across subchannels. We determine the coefficients of the B-splines based on the least-squares fitting principle. The coefficients of the B-splines are fed back to the transmitter for the CRs reconstruction. In the feedback process, we also apply efficient quantization algorithms based on the Gaussian quantization. The simulation results verify that the proposed B-spline model has smaller coefficients variances, and this leads to smaller meansquares error than the Polynomial model [1] when using fewer number of feedback bits. The simulation results also show that the proposed algorithm can attain the upper bound of channel capacity for the precoded MIMO-OFDM system in the frequency-selective channel.

原文English
主出版物標題2010 IEEE Globecom Workshops, GC'10
頁面804-808
頁數5
DOIs
出版狀態Published - 2010 12月 1
事件2010 IEEE Globecom Workshops, GC'10 - Miami, FL, United States
持續時間: 2010 12月 52010 12月 10

出版系列

名字2010 IEEE Globecom Workshops, GC'10

Other

Other2010 IEEE Globecom Workshops, GC'10
國家/地區United States
城市Miami, FL
期間10-12-0510-12-10

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 通訊

指紋

深入研究「CSI feedback for closed-loop MIMO-OFDM systems based on B-splines」主題。共同形成了獨特的指紋。

引用此