Space-frequency precoding for an OFDM based system exploiting spatial and path correlation

Jan Hansen; Eunchul Yoon; Majid Emami; Arogyaswami Paulraj

doi:10.1109/GLOCOM.2004.1377985

Space-frequency precoding for an OFDM based system exploiting spatial and path correlation

Jan Hansen, Eunchul Yoon, Majid Emami, Arogyaswami Paulraj

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

We investigate the capacity behavior of an OFDM wireless link for the frequency selective MIMO channel with correlated paths. The derivation is based on a particular channel model that characterizes path correlation as well as spatial correlation. As in the case of spatial correlation, path correlation can reduce capacity. If there is no channel knowledge at the transmitter, the capacity reduction of an OFDM based system due to path correlation can be explained in terms of the effective SNR at each tone. With spatial and path correlation information at the transmitter, we derive the optimal space-frequency precoder at every tone by numerical optimization techniques. We propose a sub-optimal precoding scheme with lower complexity which leads to a tight lower bound of the capacity of the OFDM system.

Original language	English
Title of host publication	IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)
Pages	436-440
DOIs	https://doi.org/10.1109/GLOCOM.2004.1377985
Publication status	Published - 3 Dec 2004
Externally published	Yes
Event	2004 IEEE Global Telecommunications Conference: Globecom 2004 - Dallas, TX, United States Duration: 29 Nov 2004 → 3 Dec 2004

Conference

Conference	2004 IEEE Global Telecommunications Conference
Abbreviated title	Globecom 2004
Country/Territory	United States
City	Dallas, TX
Period	29/11/04 → 3/12/04

Access to Document

10.1109/GLOCOM.2004.1377985

Cite this

@inproceedings{8467c5f4ac7c400991cd93b3756ac8b7,

title = "Space-frequency precoding for an OFDM based system exploiting spatial and path correlation",

abstract = "We investigate the capacity behavior of an OFDM wireless link for the frequency selective MIMO channel with correlated paths. The derivation is based on a particular channel model that characterizes path correlation as well as spatial correlation. As in the case of spatial correlation, path correlation can reduce capacity. If there is no channel knowledge at the transmitter, the capacity reduction of an OFDM based system due to path correlation can be explained in terms of the effective SNR at each tone. With spatial and path correlation information at the transmitter, we derive the optimal space-frequency precoder at every tone by numerical optimization techniques. We propose a sub-optimal precoding scheme with lower complexity which leads to a tight lower bound of the capacity of the OFDM system.",

author = "Jan Hansen and Eunchul Yoon and Majid Emami and Arogyaswami Paulraj",

year = "2004",

month = dec,

day = "3",

doi = "10.1109/GLOCOM.2004.1377985",

language = "English",

pages = "436--440 ",

booktitle = "IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)",

note = "2004 IEEE Global Telecommunications Conference : Globecom 2004, Globecom 2004 ; Conference date: 29-11-2004 Through 03-12-2004",

}

TY - GEN

T1 - Space-frequency precoding for an OFDM based system exploiting spatial and path correlation

AU - Hansen, Jan

AU - Yoon, Eunchul

AU - Emami, Majid

AU - Paulraj, Arogyaswami

PY - 2004/12/3

Y1 - 2004/12/3

N2 - We investigate the capacity behavior of an OFDM wireless link for the frequency selective MIMO channel with correlated paths. The derivation is based on a particular channel model that characterizes path correlation as well as spatial correlation. As in the case of spatial correlation, path correlation can reduce capacity. If there is no channel knowledge at the transmitter, the capacity reduction of an OFDM based system due to path correlation can be explained in terms of the effective SNR at each tone. With spatial and path correlation information at the transmitter, we derive the optimal space-frequency precoder at every tone by numerical optimization techniques. We propose a sub-optimal precoding scheme with lower complexity which leads to a tight lower bound of the capacity of the OFDM system.

AB - We investigate the capacity behavior of an OFDM wireless link for the frequency selective MIMO channel with correlated paths. The derivation is based on a particular channel model that characterizes path correlation as well as spatial correlation. As in the case of spatial correlation, path correlation can reduce capacity. If there is no channel knowledge at the transmitter, the capacity reduction of an OFDM based system due to path correlation can be explained in terms of the effective SNR at each tone. With spatial and path correlation information at the transmitter, we derive the optimal space-frequency precoder at every tone by numerical optimization techniques. We propose a sub-optimal precoding scheme with lower complexity which leads to a tight lower bound of the capacity of the OFDM system.

U2 - 10.1109/GLOCOM.2004.1377985

DO - 10.1109/GLOCOM.2004.1377985

M3 - Conference paper

SP - 436

EP - 440

BT - IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)

T2 - 2004 IEEE Global Telecommunications Conference

Y2 - 29 November 2004 through 3 December 2004

ER -