Performance of Adaptive MQAM with Space-Time Coding over Nakagami Fading Channel

Author

Yu, Xiangbin ; Zhou, TingTing ; Li, YanFeng

Author_Institution

Coll. of Inf. Sci. & Technol., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2010

fDate

13-14 Oct. 2010

Firstpage

220

Lastpage

223

Abstract

The performance analysis of multiple antenna systems with adaptive MQAM and space-time coding over flat Nakagami-m fading channels is presented in this paper. The fading gain value is partitioned into a number of regions by which the modulation is adapted according to the region the fading gain falls in. The fading gain region boundaries for attaining maximum spectrum efficiency subject to the target bit error rate (BER) and fixed power constraint are derived. The probability density function of fading gain is given. Based on these results and mathematical calculation, an exact closed-form expression for the SE is obtained. Meanwhile, exact BER and tightly approximate closed-form BER expressions are derived for integer and non-integer m, respectively. Simulation results for SE and BER are in good agreement with the theoretical analysis.

Keywords

Nakagami channels; antenna arrays; error statistics; probability; quadrature amplitude modulation; space-time codes; BER; Nakagami-m fading channels; adaptive MQAM; attaining maximum spectrum efficiency; bit error rate; fading gain region boundaries; fading gain value; fixed power constraint; multiple antenna systems; probability density function; space-time coding; Bit error rate; Encoding; Fading; Modulation; Receiving antennas; Simulation; Transmitting antennas; Adaptive MQAM; Nakagami fading channel; bit error rate; constant power; space-time coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Intelligence Information Security (ICCIIS), 2010 International Conference on

Conference_Location

Nanning

Print_ISBN

978-1-4244-8649-6

Electronic_ISBN

978-0-7695-4260-7

Type

conf

DOI

10.1109/ICCIIS.2010.40

Filename

5629227