A novel two-step channel-prediction technique for supporting adaptive transmission in OFDM/FDD system

Title
A novel two-step channel-prediction technique for supporting adaptive transmission in OFDM/FDD system
Authors
Chang, K.
Keywords
adaptive modulation and coding (AMC), channel prediction, orthogonal frequency-division multiplexing, frequency-division duplex (FDD)
Issue Date
2008-01
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
This paper introduces a novel channel-prediction technique for an orthogonal frequency-division multiplexing (OFDM)/frequency-division duplex (FDD) system to support an adaptive-modulation and coding (AMC) scheme over a rapidly time-varying multipath fading channel. Most channel-prediction techniques assume that there is no channel variation in the predefined time duration, e.g., the slot. As a result, those techniques cannot compensate for the degradation of packet-error-rate (PER) performance, resulting from the rapid channel variation over the slot duration. In this paper, we propose a novel two-step channel-prediction technique that considers the time-varying nature of a channel over the duration of interest. Simulation results show that the AMC scheme of the OFDM/FDD system utilizing the proposed channel-prediction technique can guarantee the target PER of 1% without any loss of system throughput compared with a case supported by a conventional channel prediction under ITU-R Veh A 30 km/h.
URI
http://dspace.inha.ac.kr/handle/10505/1663
ISSN
0018-9545
Appears in Collections:
College of Information Technology & Engineering (IT공과대학) > Infomation and Telecommunication Engineering (정보통신공학) > Journal Papers, Reports(정보통신공학 논문, 보고서)
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