학술논문
A link adaptation metric for OFDM-based WLAN systems: received equalised modulation accuracy (REMA)
Document Type
Conference
Author
Source
IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 Vehicular Technology Conference Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th. 1:645-649 Vol. 1 2004
Subject
Language
ISSN
1090-3038
Abstract
OFDM-based broadband wireless LAN standards like IEEE 802.11a or ETSI/BRAN HiperLAN/2 rely on adaptive modulation and coding for link adaptation. The paper presents a novel link adaptation metric that enables a better prediction of the BER/PER performance without a priori knowledge of the channel profile. This metric computes statistics from the output of the equalizer in order to take into account the channel noise and multipath fading conditions at the same time. Simulation and experiments show that the proposed scheme is able to improve the overall system performance with a reasonable implementation cost.