DESIGN AND IMPLEMENTATION DIFFERENT LENGTHS OF BARKER CODES BASED ON PIC MICROCONTROLLER

Latteef Mohammed, Saleem

	DESIGN AND IMPLEMENTATION DIFFERENT LENGTHS OF BARKER CODES BASED ON PIC MICROCONTROLLER
AL-TAQANI
Article 1, Volume 26, Issue 5, 2013, Pages 0-0
Author
Saleem latteef mohammed
Abstract
This paper basically deals with the Barker codes used in spread spectrum communication system, Barker codes are short unique codes that exhibit very good autocorrelation properties. These short codes of length 11 and 13 bits are very well suited for direct sequence spread spectrum (DSSS) applications and pulse compression radar system ,Barker codes have many advantages over other pseudo-Noise (PN)codes. These codes satisfy the balance property and the run property of the PN codes, therefore in this paper all Barker codes from length 2 to length 13 has been generated practically by using microcontroller PIC16F84A as codes generator. In this paper found that the method based on microcontroller to generate Barker codes are better than the traditional method which uses several digital integrated circuits (ICs). This method was low cost, easy construction, less complex, fast generation and very efficient when we need to change the code we do not need to change the hardware or add other components to design but we need to change the software only , in this paper seven programs are written and store in the memory (Flash RAM) of microcontroller, each program responsible for generation one length of Barker codes which select easy by clicking on switches ,each switch responsible for generation one length of Barker code.
Keywords
Direct sequence; Barker Codes; PIC Microcontroller

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