Adaptive modulation in microwave networks

Author

Vrazic, Zvonimir ; Zagar, Dubravko ; Grgic, Sonja

Author_Institution

Transmitters & Commun. Ltd., Zagreb

fYear

2007

fDate

12-14 Sept. 2007

Firstpage

247

Lastpage

250

Abstract

Since different types/levels of modulation have different spectral efficiency, gain of adaptive modulation has to be considered due to number of bits that are transmitted. We used model that has properties of white noise with probability of level occurrence according to normal Gaussian distribution. In order to perform more exact calculation of the gain of adaptive modulation further research has to be carried out (because of channel properties, properties of logic device that measures BER level and decides between certain modulation levels or types).

Keywords

Gaussian distribution; adaptive modulation; error statistics; normal distribution; phase shift keying; quadrature amplitude modulation; radio networks; white noise; BER level; M-PSK; M-QAM; adaptive modulation; bit error rate; channel properties; logic device properties; microwave networks; modulation levels; normal Gaussian distribution; phase shift keying; quadrature amplitude modulation; spectral efficiency; symbol error rate; white noise; Bit error rate; Electronic mail; Employment; Error probability; Fading; Gaussian distribution; Microwave communication; Robustness; Transmitters; White noise; Adaptive modulation; Bit Error Rate; M-QAM, M-PSK; Symbol Error Rate; microwave networks;

fLanguage

English

Publisher

ieee

Conference_Titel

ELMAR, 2007

Conference_Location

Zadar

ISSN

1334-2630

Print_ISBN

978-953-7044-05-3

Type

conf

DOI

10.1109/ELMAR.2007.4418841

Filename

4418841