Nyquist 3 Pulse Shaping in Continuous Phase Modulation

Author

Sayar, Babak ; Pasupathy, Subbarayan

Author_Institution

Bell Northern Res. in Montreal,Canada

Volume

35

Issue

1

fYear

1987

fDate

1/1/1987 12:00:00 AM

Firstpage

57

Lastpage

67

Abstract

Continuous phase modulation (CPM) schemes, using Nyquist 3 pulse shaping and correlative codes, are popular candidates for mobile radio applications. This paper presents a detailed study of the effects of Nyquist 3 pulse shaping on the spectral characteristics of CPM schemes with a modulation index of 1/2. The influence of pulse parameters such as its shape, bandwidth, coding polynomial, and truncation length on spectral characteristics such as main lobe, fractional power bandwidths, and out-of-band power levels is thoroughly investigated; error performance is also briefly analyzed. Among uncoded schemes, a new scheme using a pulse satisfying both Nyquist 3 and Nyquist 2 criteria is pointed out as a promising candidate and as a good compromise between spectral and power efficiencies.

Keywords

Continuous phase modulation; Pulse shaping; Bandwidth; Continuous phase modulation; Filters; Frequency; Performance analysis; Phase modulation; Polynomials; Pulse modulation; Pulse shaping methods; Shape;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1987.1096658

Filename

1096658