Novel rate allocation scheme to minimize average transmission delay in CDMA uplink

Xiaoming Bo; Zujue Chen

doi:10.1117/12.522996

28 April 2004 Novel rate allocation scheme to minimize average transmission delay in CDMA uplink

Xiaoming Bo, Zujue Chen

Proceedings Volume 5284, Wireless Communications and Networks; (2004) https://doi.org/10.1117/12.522996
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

An optimum rate allocation scheme for code division multiple access (CDMA) uplink, which minimizes the average transmission delay of data users under the system resource constraint, is derived and evaluated in this paper. The average transmission delay minimization issue is formulated as a constrained optimization problem and solved using the Lagrange multiplier method. It is found that the proposed allocation rule achieves the minimum average transmission delay of data users compared to the other two conventional rate allocation schemes. Moreover, the proposed approach obtains much less transmission delay against the other two schemes especially when the traffic load is higher, which indicates that our scheme is more efficient in the high load systems. Numerical examples also show that the system parameters such as outage probability constraint and power control errors have great impact on the delay performance. Since our work is based on the imperfect power control model, it is more appropriate to the practical CDMA systems, especially for the delay-sensitive services.

Citation Download Citation

Xiaoming Bo and Zujue Chen "Novel rate allocation scheme to minimize average transmission delay in CDMA uplink", Proc. SPIE 5284, Wireless Communications and Networks, (28 April 2004); https://doi.org/10.1117/12.522996

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available