Volume 8, Issue 1 (2008)                   MJEE 2008, 8(1): 29-37 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Sowlat G, حکاک م. Design & Implementation of a Pulse Shaping Method to Reduce Transmitted Power in Domsat Satellite Earth Stations. MJEE. 8 (1) :29-37
URL: http://mjee.modares.ac.ir/article-17-5858-en.html
1- P. O. Box: 14155-3961, Tehran, Iran
2- دانشگاه تربیت مدرس
Abstract:   (2926 Views)
In SCPC-DAMA satellite networks, the baseband RRC pulse shaping is utilized to reduce the bandwidth and Inter Symbol Interference (ISI). But the variation in carrier's envelope, which expands the spectrum and ultimately increases the bandwidth, causes ISI and Quadrature Channel Crosstalk (QCC). The goal of this paper is to introduce a method to shape baseband RRC pulses, in order to make a nearly constant carrier envelope. We have introduced and implemented an algorithm to limit the amplitude variation of each pulse to generate constant amplitude RRC pulses at the input of modulator. Matlab simulation and hardware experiments show that OQPSK modulation and this pulse shaping method, can improve BER about 2dB.
Keywords: ISI, ISI, SCPC, OQPSK, RRC Pulses
Full-Text [PDF 674 kb]   (1411 Downloads)    

Received: 2010/11/21 | Accepted: 2009/07/26 | Published: 2010/11/21

Add your comments about this article : Your username or Email: