Name
Abstract | ||
|---|---|---|
For orthogonal frequency division multiplexing (OFDM) communication systems, the orthogonality among subcarriers is lost in mobile radio channels due to the frequency offsets caused by mobility. As a direct result, intercarrier interference (ICI) is observed on each and every subcarrier, leading to significant performance degradation. Many ICI cancellation methods such as windowing and frequency domain coding have been proposed in the literature to cancel ICI and improve the BER performance of OFDM in mobile channel. However, the performance improvement achieved by all the existing ICI cancellation methods is far from enough: the BER performance after ICI cancellation is still much worse than the BER performance of original OFDM without ICI. Moreover, popular ICI cancellation methods like ICI self-cancellation reduce ICI at the price of lowering the transmission rate and reducing the bandwidth efficiency. Other frequency-domain coding methods do not reduce the data rate, but produce less reduction in ICI as well. In this paper, we propose a novel ICI cancellation scheme which can eliminate the ICI entirely and offer a OFDM mobile system with the same BER performance of a OFDM system without ICI. More importantly, the proposed ICI cancellation scheme, namely Total ICI cancellation, does not lower the transmission rate or reduce the bandwidth efficiency. Specifically, the total ICI cancellation scheme takes advantage of the orthogonality of the ICI matrix and offers perfect ICI cancellation and significant BER improvement at linearly growing cost. Simulation results in AWGN channel and multi-path fading channel confirm the superb performance of the proposed total ICI cancellation scheme in the presence of frequency offset or time variations in the channel, outperforming all the existing ICI cancellation methods. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/CCNC.2010.5421827 | Consumer Communications and Networking Conference |
Keywords | Field | DocType |
ber performance,bandwidth efficiency,bit error rate,frequency offsets,mobile radio channels,awgn channels,total ici cancellation,novel ici cancellation scheme,ici matrix,fading channels,ofdm modulation,orthogonal frequency division multiplexing,total intercarrier interference cancellation,multipath fading channel,ofdm mobile communication system,frequency-domain analysis,channel coding,perfect ici cancellation,multipath channels,awgn channel,ici cancellation methods,mobile radio,frequency-domain coding methods,total ici cancellation scheme,ici cancellation method,intercarrier interference,ici cancellation,interference suppression,ofdm mobile communication systems,error statistics,existing ici cancellation method,popular ici cancellation method,frequency domain analysis,frequency offset,communication system,frequency domain,fading channel | Subcarrier,Fading,Computer science,Frequency offset,Single antenna interference cancellation,Computer network,Interference (wave propagation),Spectral efficiency,Additive white Gaussian noise,Orthogonal frequency-division multiplexing | Conference |
ISSN | ISBN | Citations |
2331-9852 | 978-1-4244-5176-0 | 5 |
PageRank | References | Authors |
0.61 | 7 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Xue Li | 1 | 93 | 11.57 |
| Ruolin Zhou | 2 | 40 | 7.00 |
| Vasu Chakravarthy | 3 | 161 | 26.35 |
| Steven Hong | 4 | 109 | 12.49 |
| Zhiqiang Wu | 5 | 30 | 6.60 |