Achievable diversity limits in a quantized MIMO-OFDM linear pre-coded system

Author

Botha, Philip R. ; Louw, Daniel J. ; Maharaj, B.T.

Author_Institution

Dept. of Electr., Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa

fYear

2010

fDate

5-7 May 2010

Firstpage

455

Lastpage

459

Abstract

In this paper, the effects of quantization on the achievable diversity of a linearly precoded Space-Time-Frequency (STF) and Space-Frequency (SF) coded MIMO-OFDM system are studied. A relationship between the maximum achievable diversity in a linearly precoded system and the number of quantization bits is derived. The performance of two different STF codes for various levels of quantization is simulated. These simulations are performed on an equal two ray channel, as well as a realistic channel. The simulations results matched the results predicted by the derived expressions. The effects of quantization on the diversity that STF and SF linearly precoded systems are able to extract, have been mathematically quantified.

Keywords

Discrete Fourier transforms; MIMO; OFDM; Pervasive computing; Predictive models; Pulse modulation; Quantization; Transmitters; Transmitting antennas; Wireless communication; Diversity; Linear Precoding; MIMO-OFDM; Quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Pervasive Computing (ISWPC), 2010 5th IEEE International Symposium on

Conference_Location

Modena, Italy

Print_ISBN

978-1-4244-6855-3

Electronic_ISBN

978-1-4244-6857-7

Type

conf

DOI

10.1109/ISWPC.2010.5483806

Filename

5483806