Adaptive resource management for downlink OFDMA system with imperfect CSI. Issue 7 (1st March 2014)

• Record Type: Journal Article
• Authors: Wang, Zhuwei; Liu, Lihan
• Is Part Of: Electronics letters. Volume 50:Issue 7(2014)
• Page Start: 554
• Page End: 556
• Publication Date: 2014-03-01
• Subjects: OFDM modulation -- frequency division multiple access -- numerical analysis; adaptive resource management -- downlink OFDMA system -- imperfect CSI -- imperfect channel state information -- numerical simulation -- signal‐and‐power dependent noise term -- utility function evaluation; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.0025
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : The effect of the imperfect channel state information (CSI) on the system performance of radio resource management is addressed for a downlink OFDMA system. Differing from the previous works, it is shown that the imperfect CSI introduces a signal‐and‐power dependent noise term, and then a new method is proposed to evaluate the utility function. Numerical simulations show that the signal‐and‐power dependent noise yields a non‐negligible degradation to the system performance.