Back
 IJCNS  Vol.3 No.5 , May 2010
The Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System
Abstract: In this paper we propose an automatic bandwidth control method for the performance improvement of Binary Amplitude Shift Keying (BASK) system for Giga-bit Modem in millimeter band. To improve the performance of the BASK system with a fixed bandwidth, the proposed method is to adjust a bandwidth of low pass filter in receiver using the fuzzy system. The BASK system consists of a high speed shutter of the transmitter and a counter and a repeater of receiver. The repeater consists of four stage converters, and a converter is constructed with a low pass filter and a limiter. The inputs to the fuzzy system are the reminder and integral of remainder of counter, and output is a bandwidth. We used a Viterbi algorithm to find the optimum detection from output of the counter. Simulation results show that the proposed system improves the performance compared to the fixed bandwidth.
Cite this paper: nullK. Eom, K. Hyun and K. Jung, "The Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System," International Journal of Communications, Network and System Sciences, Vol. 3 No. 5, 2010, pp. 441-445. doi: 10.4236/ijcns.2010.35058.
References

[1]   V. R. M. Thyagarajan, R. H. M. Hafez and D. D. Falconer, “Broadband Indoor Wireless Communication in (20 ~ 60) GHz Band: Signal Strength Considerations,” Universal Personal Communication, Vol. 2, October 1993, pp. 894-899.

[2]   T. S. Rappaport, “Wireless Communications,” 2nd Edition, Prentice Hall, New Jersey, 2002.

[3]   E. Lindskog and A. Paulraj, “A Transmit Diversity Scheme for Channels with Intersymbol Inference,” Proceedings of IEEE International Conference on Communications, New Orleans, Vol. 1, June 2000, pp. 307-311.

[4]   S. Haykin, “Communication Systems,” 4th Edition, John Wiley Inc., Canada, 2000.

[5]   R. Johnston, “Fuzzy Logic Control,” GEC Journal of Research, Vol. 11, No. 2, 1994, pp. 99-109.

[6]   M. Hosemann, R. Habendorf and G. P. Fettweis, “Hardware-Software Codesign of A 14.4 Mbit - 64 State - Viterbi Decoder for An Application-Specific Digital Signal Processor,” Proceedings of IEEE Workshop on Signal Processing Systems 2003, Seoul, 27-29 August 2003, pp. 45-50.

 
 
Top