Improving the capacity of OFDM via frequency-domain oversampling

Author

Shi, Qinghua ; Karasawa, Y.

Author_Institution

Dept. of Electron. Eng., Univ. of Electro-Commun., Chofu

fYear

2009

fDate

13-15 May 2009

Firstpage

144

Lastpage

147

Abstract

A frequency-domain oversampling based scheme is proposed for OFDM systems. It is shown that a linear minimum mean-square error (MMSE) receiver with frequency oversampling can efficiently increase the capacity of OFDM. The improvement in capacity is determined by the number of multipath components of the channel. In contrast, the conventional MMSE receiver without frequency oversampling cannot exploit the multipath diversity provided by the channel.

Keywords

OFDM modulation; channel capacity; frequency-domain analysis; least mean squares methods; sampling methods; MMSE receiver; OFDM capacity; frequency-domain oversampling; linear minimum mean square error; multipath component; multipath diversity; Fading; Frequency diversity; Frequency division multiplexing; Frequency estimation; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; OFDM; Time domain analysis; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2009. CWIT 2009. 11th Canadian Workshop on

Conference_Location

Ottawa, ON

Print_ISBN

978-1-4244-3400-8

Electronic_ISBN

978-1-4244-3401-5

Type

conf

DOI

10.1109/CWIT.2009.5069541

Filename

5069541

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1975871