Spatial signature estimation in cumulant domain and application to smart antenna system

In this paper, we propose a subspace-based spatial signature estimation algorithm of cochannel multiuser signals by exploiting cumulant, and apply it to multiuser signal copy in uplink SDMA (space-division multiple-access) for smart antenna system. Our method constructs a new matrix called spatial s...

Full description

Saved in:

Bibliographic Details
Main Authors:	JIA, Weimin, YAO, Minli, SONG, Jianshe
Format:	Conference Proceeding
Language:	eng
Subjects:	Antenna arrays Antennas Antennas and propagation Applied sciences Base stations Computer simulation Detection, estimation, filtering, equalization, prediction Direction of arrival estimation Downlink Exact sciences and technology Fading Filter bank Information, signal and communications theory Multiaccess communication Radiocommunications Signal and communications theory Signal, noise Spatial filters Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments)
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	In this paper, we propose a subspace-based spatial signature estimation algorithm of cochannel multiuser signals by exploiting cumulant, and apply it to multiuser signal copy in uplink SDMA (space-division multiple-access) for smart antenna system. Our method constructs a new matrix called spatial signature matrix (SS Matrix), and estimates multiuser spatial signature through the eigen-decomposition of the SS matrix. Based on estimated spatial signature, a spatial filter bank is designed for cochannel multiuser waveform estimation. Computer simulations show that the spatial response of the filter bank can be used to find direction-of-arrival (DOA) of the correlated multiuser signals.