On the importance of error memory in UMTS radio channel emulation using hidden Markov models (HMM)

Author

Umbert, Anna ; Díaz, Pilar

Author_Institution

Univ. Politecnica de Catalunya, Barcelona, Spain

Volume

4

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

2998

Abstract

The possibility to change data rate in 10 milliseconds is one of the innovative features of the Universal Mobile Telecommunications System (UMTS). This change results in a different mobile channel with different burst error characteristics that can be modelled and its effects can be emulated by hidden Markov models (HMM) which are computationally more efficient than waveform level models. Thus the data rate change in the wideband CDMA (WCDMA) channel supposes to change the HMM. This change from one HMM to another can be performed considering the number of errors in the last frame or not. In this paper the impact of error memory when the channel is emulated by HMM change, is presented.

Keywords

3G mobile communication; broadband networks; code division multiple access; hidden Markov models; telecommunication channels; HMM; UMTS radio channel emulation; Universal Mobile Telecommunications System; burst error characteristic; code division multiple access; error memory; hidden Markov model; mobile channel; wideband CDMA channel; 3G mobile communication; Access protocols; Communication channels; Emulation; Error analysis; Hidden Markov models; Mobile computing; Multiaccess communication; Physical layer; Telecommunication computing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1368870

Filename

1368870