DocumentCode :
3642769
Title :
FPGA implementation of BPSK modem for telemetry systems operating in noisy environments
Author :
Pero Krivić;Goran Štimac
Author_Institution :
University of Zagreb, Faculty of electrical engineering and computing, 2011
fYear :
2011
fDate :
5/1/2011 12:00:00 AM
Firstpage :
1727
Lastpage :
1731
Abstract :
BPSK modulation is widely used approach in industrial telemetry systems for digital communication over noisy channels due to inherent high noise immunity and low bit-error rate (BER). The most critical part of the BPSK modem implementation in a programmable digital system is the design of demodulator part. We studied characteristics and trade-offs for two commonly used approaches to the BPSK demodulator implementation, which are both suitable for efficient field-programmable gate array (FPGA) implementation: the incoherent BPSK demodulator, based on the complex product demodulation, and the coherent BPSK demodulator, based on the carrier synchronization using internal phase-lock loop (PLL) (Costas Loop) and numerically controlled oscillator (NCO). We employed correlation filter and integrator for symbol synchronization. We compared overall characteristics for both approaches, in terms of robustness in noisy environments and FPGA implementation complexity.
Keywords :
"Demodulation","Field programmable gate arrays","Binary phase shift keying","Synchronization","Mathematical model","Finite impulse response filter","Bit error rate"
Publisher :
ieee
Conference_Titel :
MIPRO, 2011 Proceedings of the 34th International Convention
Print_ISBN :
978-1-4577-0996-8
Type :
conf
Filename :
5967341
Link To Document :
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