Wireless LAN White Papers
Adaptive Modulation for Variable-Rate OFDM Systems With Imperfect Channel Information
Overview Adaptive modulation has been shown to have significant benefits for high-speed wireless data transmission when orthogonal frequency division multiplexing (OFDM) is employed. However, accurate channel state information (CSI) is required at the transmitter to achieve the benefits. Imperfect CSI arises from noisy channel estimates, which may also be outdated due to a delay in getting the CSI to the transmitter. In this paper adaptive OFDM with both perfect and imperfect CSI for the variable bit rate case, where a target bit error rate is set is studied.
| Publisher | Lehigh University | File Format | |
|---|---|---|---|
| Date Published | February 2002 | Downloads | 5 |
| Format | White Papers | ||
| Topics | |||
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