DocumentCode :
3442331
Title :
Performance and Power Spectrum Calculations for Convolutionally Coded Generalized MSK with Two Symbol Periods Pulse Shape Duration
Author :
Abediseid, Walid
Author_Institution :
Dept. of Electr. & Comp. Eng., Waterloo Univ., Waterloo, ON
fYear :
2008
fDate :
28-30 April 2008
Firstpage :
1
Lastpage :
5
Abstract :
We show that by applying a cascaded convolutional encoder using two stages of coding, the last being a double repetition code, to "preceded" generalized minimum-shift keying (MSK) signals with pulse shape of duration two symbol periods a significant improvement in power and spectral efficiency is achieved. With only a double repetition code, it is shown that the signal has a power spectrum identical to uncoded MSK-like. When outer encoder is applied to improve the power efficiency, the bandwidth expansion is just a reciprocal of the outer encoder rate. It is demonstrated that considering performance, bandwidth and receiver complexity, generalized MSK signal coded using our special cascaded convolutional codes is an improvement over MSK and generalized MSK coded with "optimum" convolutional codes for the same code rate and receiver complexity reported previously for the same modulation scheme.
Keywords :
convolutional codes; minimum shift keying; cascaded convolutional encoder; convolutionally coded generalized MSK; double repetition code; modulation scheme; power spectrum calculations; preceded generalized minimum-shift keying signals; pulse shape duration; two symbol periods; Bandwidth; Convolution; Convolutional codes; Frequency; Maximum likelihood estimation; Modulation coding; Power engineering and energy; Pulse modulation; Pulse shaping methods; Shape;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sarnoff Symposium, 2008 IEEE
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4244-1843-5
Type :
conf
DOI :
10.1109/SARNOF.2008.4520047
Filename :
4520047
Link To Document :
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