Abstract:
Orthogonal Frequency Division Multiplexing (OFDM) technology is a key technique
for achieving the high data rate and spectral efficiency requirements for wireless
communication systems of the near future. UWB - Multiband OFDM has an acceptable
BER performance. In a multipath noisy channel the bit error is very high. In this Paper
we present the Barker code as a coding technique and solution to increase the BER
performance using the correlation detection. The system performance is increased up to
11 dB for autocorrelation detection. The drawbacks of the system are the additional
required bandwidth, congestion of the channel and the unexpected error position in the
Barker sequence. In order to minimize bandwidth, Time-Frequency-Time using Direct
and reversed Fourier transforms is used based on acoustic electronic processors.