An equalization technique for orthogonal frequency-division multiplexing systems in time-variant multipath channels
- Authors
- Jeon, Won Gi; Chang, Kyung Hi; Cho, Yong Soo
- Issue Date
- Jan-1999
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- equalization; interchannel interference; orthogonal frequency-division multiplexing; time-variant multipath channels
- Citation
- IEEE TRANSACTIONS ON COMMUNICATIONS, v.47, no.1, pp 27 - 32
- Pages
- 6
- Journal Title
- IEEE TRANSACTIONS ON COMMUNICATIONS
- Volume
- 47
- Number
- 1
- Start Page
- 27
- End Page
- 32
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/39274
- DOI
- 10.1109/26.747810
- ISSN
- 0090-6778
1558-0857
- Abstract
- A loss of subchannel orthogonality due to time-variant multipath channels in orthogonal frequency-division multiplexing (OFDM) systems leads to interchannel interference (ICI) which increases the error floor in proportion to the Doppler frequency, In this paper, a simple frequency-domain equalization technique which can compensate for the effect of ICI in a multipath fading channel is proposed. In this technique, the equalization of the received OFDM signal is achieved by using the assumption that the channel impulse response (CIR) varies in a linear fashion during a block period and by compensating for the ICI terms that significantly affect the bit-error rate (BER) performance.
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