Radio resource management for the uplink OFDMA system with imperfect CSI

Author

Lihan Liu ; Zhuwei Wang ; Xing Zhang ; Hong Wu

Author_Institution

Sch. of Econ. & Manage., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2015

fDate

9-12 March 2015

Firstpage

1764

Lastpage

1768

Abstract

This paper investigates the effect of imperfect channel state information (CSI) on the performance of radio resource management for the uplink OFDMA system. First, we prove that the imperfect CSI introduces a constellation-point dependent and error-floor symbol error rate (SER), which correspondingly yields the nonconvex and nondifferentiable throughput function in real communication systems. Then, in the uplink OFDMA system, a bisection algorithm and BA-based algorithm are proposed for single-user and multi-user cases, respectively, for the adaptive resource allocation to minimize the total transmit power.

Keywords

OFDM modulation; channel allocation; error statistics; frequency division multiple access; minimisation; telecommunication network management; BA-based algorithm; SER; adaptive resource allocation; bisection algorithm; channel state information; error floor symbol error rate; imperfect CSI; nonconvex throughput function; nondifferentiable throughput function; radio resource management; total transmit power minimisation; uplink OFDMA system; Downlink; Noise; Optimization; Resource management; Throughput; Tin; Uplink;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2015 IEEE

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/WCNC.2015.7127735

Filename

7127735