Performance analysis of TDD OFDM systems with phase and amplitude and phase pre-equalization

Author

Da-Wei, Liu ; You-xi, Tang ; Shao-Qian, Li

Author_Institution

Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

1

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

529

Abstract

In this paper, the performance of time division duplex (TDD) orthogonal frequency division multiplexing (OFDM) systems over slow Rayleigh channels with phase and amplitude and phase pre-equalization are analyzed. The hit error rate (BER) formulas of binary phase-shift keying (BPSK) modulated TDD OFDM systems using ideal and nonideal pre-equalization are provided. Computer simulations are performed and the results verify corresponding formulas. The system performance of phase pre-equalization is decided by E_b/N₀ and channel estimation(CE) error. With the diminishing of CE error, system performance will reach towards the theoretical performance of a BPSK system in Rayleigh channels. In amplitude and phase pre-equalization systems, appropriate pre-equalization factor should he selected carefully to avoid the boost effect of transmission power and CE error on those subcarriers suffering deep fading. The corresponding BER formulas are presented, which base upon the E_b/N₀, mean square error (MSE) and pre-equalization factor.

Keywords

OFDM modulation; Rayleigh channels; channel estimation; equalisers; error statistics; mean square error methods; time division multiple access; BER; BPSK system; CE error; TDD OFDM systems; amplitude&phase pre-equalization; amplitude-and-phase pre-equalization; binary phase-shift keying modulated TDD OFDM systems; bit error rate; channel estimation; computer simulations; deeply fading subcarriers; ideal pre-equalization; mean square error; nonideal pre-equalization; performance analysis; phase pre-equalization; pre-equalization factor; slow Rayleigh channels; system performance; time division duplex orthogonal frequency division multiplexing; transmission power boost effect; Binary phase shift keying; Bit error rate; Computer errors; Error analysis; OFDM; Performance analysis; Phase modulation; Phase shift keying; Rayleigh channels; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1400063

Filename

1400063