Proc. SPIE. 5284, Wireless Communications and Networks
KEYWORDS: Signal to noise ratio, Doppler effect, Sensors, Interference (communication), Telecommunications, Signal processing, Wireless communications, Orthogonal frequency division multiplexing, Optical correlators, Signal detection
Multi-carrier technique is usually explored for high-speed communication. Traditionally, CP (cyclic prefix) is used to remove inter-symbol-interference (ISI). However, in this paper, a robust multi-carrier system with low data speed is proposed, with the purpose for anti-jamming. A pseudo-noise (PN) code is used to spread the message bit among sub-carriers. Instead of embedding the long time cyclic prefix (CP), a simple coding over time is used to reduce the error rate due to ISI. The result of simulation has shown that this system performs well.