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

Ren Shian Chen, Ming-Xian Chang

研究成果: Conference contribution


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.

主出版物標題2010 IEEE Globecom Workshops, GC'10
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


名字2010 IEEE Globecom Workshops, GC'10


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

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 通訊


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