A Robustness Analysis of Game-Theoretic CDMA Power Control

Xingzhe FAN; Murat ARCAK; John T. WEN

Makale detayları

A Robustness Analysis of Game-Theoretic CDMA Power Control

Yazarlar:

Xingzhe FAN | Murat ARCAK | John T. WEN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2004 Vol.12 Issue 3, pp.139-150

Belge Tipi:

Makale

Yayın Tarihi:

2/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000744241

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

This paper studies robustness of a gradient-type CDMA uplink  power control algorithm with respect to disturbances and time-delays.   This problem is of practical importance because unmodeled secondary  interference effects from neighboring cells play the role of  disturbances, and propagation delays are ubiquitous in wireless data  networks.  We first show Lp-stability, for p \in [1,\infity], with  respect to additive disturbances.  We pursue L\infity-stability within  the input-to-state stability (ISS) framework of Sontag [7], which  makes explicit the vanishing effect of the initial conditions.  Next,  using the ISS property and a loop transformation, we prove that global  asymptotic stability is preserved for sufficiently small time-delays  in forward and return channels.  For larger delays, we achieve global  asymptotic stability by scaling down the step-size in the gradient  algorithm.

 

This paper studies robustness of a gradient-type CDMA uplink  power control algorithm with respect to disturbances and time-delays.   This problem is of practical importance because unmodeled secondary  interference effects from neighboring cells play the role of  disturbances, and propagation delays are ubiquitous in wireless data  networks.  We first show Lp-stability, for p \in [1,\infity], with  respect to additive disturbances.  We pursue L\infity-stability within  the input-to-state stability (ISS) framework of Sontag [7], which  makes explicit the vanishing effect of the initial conditions.  Next,  using the ISS property and a loop transformation, we prove that global  asymptotic stability is preserved for sufficiently small time-delays  in forward and return channels.  For larger delays, we achieve global  asymptotic stability by scaling down the step-size in the gradient  algorithm.

Makale detayları

A Robustness Analysis of Game-Theoretic CDMA Power Control

Yazarlar: Xingzhe FAN | Murat ARCAK | John T. WEN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2004 Vol.12 Issue 3, pp.139-150

Belge Tipi: Makale

Yayın Tarihi: 2/2004

Belge Dili: Türkçe

Document ID (Org No.): 2000744241

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Xingzhe FAN | Murat ARCAK | John T. WEN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2004 Vol.12 Issue 3, pp.139-150

Belge Tipi:

Makale

Yayın Tarihi:

2/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000744241

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632