Unslotted DS/CDMA packet radio network using CLSP and packet-length adaptation in Rayleigh fading channel

Author

Phan, Vinh V.

Author_Institution

Nokia, Oulu, Finland

Volume

2

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

782

Abstract

We to high uncertainty of radio channel and imperfect power control, throughput-delay performance of packet radio networks (PRN) may suffer from disgraceful degradations. This paper shows that, while error-correcting channel coding has not yet been effective in heavily-correlated flat fading environments, adapting the length of radio packets to time-varying channel conditions is a simple adaptive technique for maintaining and improving the system performance and the energy-efficiency of mobile terminals. Based on a comprehensive study of correlation between fade duration statistics and packet length over a flat Rayleigh fading channel, robust adaptation mechanisms and performance characteristics are derived for an unslotted CLSP/DS-CDMA PRN system.

Keywords

Rayleigh channels; access protocols; channel coding; code division multiple access; correlation methods; error correction codes; land mobile radio; multiuser channels; packet radio networks; spread spectrum communication; time-varying channels; CLSP; MAC performance; Rayleigh fading channel; adaptive technique; adio channel; channel load sensing protocol; correlated flat fading environments; correlation; energy-efficiency; error-correcting channel coding; fade duration statistics; flat Rayleigh fading channel; imperfect power control; mobile terminals; packet length; packet-length adaptation; performance characteristics; radio packet length; robust adaptation mechanisms; system performance; throughput-delay performance; time-varying channel conditions; unslotted CLSP/DS-CDMA PRN systems; unslotted DS/CDMA packet radio network; Channel coding; Degradation; Fading; Multiaccess communication; Packet radio networks; Power control; Rayleigh channels; System performance; Time-varying channels; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th

Print_ISBN

0-7803-7484-3

Type

conf

DOI

10.1109/VTC.2002.1002594

Filename

1002594