Modems White Papers
Frequency-Domain Equalization for OFDM Over Doubly-Selective Channels
Overview This paper proposes a new equalization technique for multi-carrier systems over time- and frequency-selective channels. Due to the time-variation of the channel, the orthogonality between subcarriers is destroyed. A 1-tap time-varying filter is used to combat the time-variation of the channel. However, it is shown that by transferring the time-domain operations to the frequency-domain, we can approach the performance of the purely frequency-selective channel. An important feature of the proposed technique is that no bandwidth expansion or redundancy insertion is required.
| Publisher | Katholieke Universiteit Leuven | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | July 2003 | Downloads | 3 |
| Format | White Papers | ||
| Topics | |||
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