Power Control for Space-Time Block Coded MIMO System with Beamforming and Imperfect Channel State Information
スポンサーリンク
概要
- 論文の詳細を見る
In this paper, an optimal power control for minimizing bit error rate (BER) subject to a power constraint for space-time block coded MIMO systems with beamforming over Rayleigh fading channels under imperfect channel state information (CSI) is presented. The optimal power control procedure is developed. It is shown that the Lagrange multiplier for the constrained optimization does exist and is unique. To simplify the power control procedure, a closed-form suboptimal power control scheme is drived based on the asymptotic performance analysis of the optimal power control and Taylors series expansion. The calculation of the suboptimal power control is straightforward with low computational complexity. Moreover, the suboptimal scheme can provide the BER performance close to that of the optimal power control and is lower than that of the existing suboptimal scheme. Simulation results show that the proposed two power control schemes can provide BER lower than that of the equal power allocation and the existing suboptimal scheme under imperfect CSI.
論文 | ランダム
- 九州産業大学付属A高校における「心理相談サテライト」--2010年度活動報告
- COPDとステロイド薬治療 (特集 呼吸器疾患とステロイド療法)
- COPDにおける炎症と加齢の関係
- COPDのガイドライン (特集 最新の呼吸器疾患ガイドライン)
- 70歳以上の高齢者続発性気胸に対する外科治療 (特集 気胸・嚢胞性肺疾患の手術) -- (難治性続発性気胸・高齢者気胸に対する手術の工夫)