On-Chip Code Tracking for Multi-Carrier Multiple Access System.

Present day services and its users need new technology so as to integrate multimedia services along with existing ones within the same Bandwidth. Future communication networks need wide Bandwidth & high-speed access. Ever since the World War 2, spread spectrum techniques have been widely used in a variety of military and civilian applications. A method of Spread Spectrum Multiple Access technique called Frequency Hopping/Multiple Carrier Direct Sequence-Code Division Multiple Access [1] (FH/MC DSCDMA), is an emerging system for future communication system. In this work an FH/MC DS-CDMA scheme is synthesized in VLSI chip of Xilinx's XC4000 architecture. The adoptability of the proposed system for future generation mobile as well as existing generation is always higher. Multiple carriers can be allotted as per user requirements with high secrecy and multiple encryptions. The performance analysis for the above scheme is shown supportive in terms of BER, power requirements, complexity, etc., compared to existing and evolving techniques. Here as a part of the research works a method for quick tracking of frequency-hopped signals is performed in on-chip. [ABSTRACT FROM AUTHOR]