Random spacing channel assignment to reduce the nonlinear intermodulation distortion in cellular mobile communications

Author

Jung, Hanwook ; Tonguz, Ozan K.

Author_Institution

Dept. of Electr. Eng., State Univ. of New York, Buffalo, NY, USA

Volume

48

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1666

Lastpage

1675

Abstract

In cellular mobile communications, only a subset of all available frequency channels are assigned to each cell, hence, the interchannel spacing of channels is wider than the required minimum. In this paper, a random spacing channel assignment (RSCA) scheme is proposed which exploits the wider interchannel spacing of assigned channels in each cell to reduce the most deleterious third-order intermodulation distortion caused by the nonlinear devices, such as hard limiters or nonlinear power amplifiers. Results show that the proposed RSCA scheme can reduce the third-order intermodulation noise power by approximately 4-5 dB and yet it can still satisfy the minimum adjacent channel spacing requirement

Keywords

cellular radio; channel allocation; interference suppression; intermodulation distortion; radiofrequency interference; 4 to 5 dB; RSCA scheme; assigned channels; available frequency channels; cellular mobile communications; hard limiter; interchannel spacing; minimum adjacent channel spacing requirement; nonlinear device; nonlinear intermodulation distortion; nonlinear power amplifier; random spacing channel assignment; third-order intermodulation distortion; third-order intermodulation noise power; Channel spacing; Frequency division multiaccess; Intermodulation distortion; Land mobile radio cellular systems; Mobile communication; Noise reduction; Personal communication networks; Power amplifiers; Sprites (computer); Time division multiple access;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.790548

Filename

790548