Design and implementation of a costas loop down converter in FPGA

Document Type

Conference Proceeding

Publication Date

12-1-2009

Abstract

This paper presents the the design of a digital down converter (DDC) using a digital Costas loop in a field programmable gate array (FPGA). The designed DDC is one of the modules in the receiver of the base station in a wireless local positioning systems (WLPS). WLPS is capable of localization in the GPS-denied environments such as indoor and underground. The final results and performance measures are quantified and discussed. At the bit error rate (BER) of 10-4 our fixed point implementation of the demodulator using the Costas loop performs only 0.125 dB worst than the theoretical limit.

Publication Title

2009 5th IEEE GCC Conference and Exhibition, GCC 2009

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