Wireless LAN White Papers
Interference Avoidance Dynamic Adaptive OFDM Using a Reconfigurable Radio Platform
Overview This paper presents an advanced wireless communications system using an enhanced version of Orthogonal Frequency Division Multiplexing (OFDM)/Adaptive OFDM (OFDMA) called Dynamic Adaptive OFDM (DAOFDM). The main focus of this work is the creation of a receiver-centric improved OFDM wireless transmission system that has reduced Bit Error Rate (BER) and increased channel capacity usage in interference-prone wireless bands. This scheme dynamically adapts to the time-varying communications channel and avoids carrier frequencies experiencing interference levels in excess of a specific power-spectral density threshold level without incurring extra transmission overheads. A reconfigurable radio based on a General-Purpose Processor (GPP) platform forms the basis for this system. An analysis of the capacity enhancements and BER performance of this system in an interference and noise-affected channel model is presented.
| Publisher | Trinity College Dublin | File Format | |
|---|---|---|---|
| Date Published | June 2006 | Downloads | 1 |
| Format | White Papers | ||
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