A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading

Chih-Wen Chang, Li Chun Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In the multi-rate multi-carrier direct sequence code division multiple access (MC-DS-CDMA) system, how to allocate subcarrier power to improve the received signal quality, control the multiple access interference (MAI) at an acceptable level, and simultaneously maintain high call admission is an interesting and challenging issue. In this paper, we propose a joint subcarrier power allocation and code assignment scheme for the synchronous multi-rate MC-DS-CDMA system with time- and frequency-domain spreading. The proposed scheme consists of a subcarrier power allocation method to optimize the received signal power as well as an interference avoidance code assignment strategy to eliminate MAI. For this purpose, we define a performance metric called the MAI coefficient to quantitatively predict the incurred MAI before assigning a spreading code. The simulation results show that the proposed joint subcarrier power allocation and code assignment strategy not only can reach a better received signal quality but also achieve high call admission rate.

Original languageEnglish
Title of host publicationIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
DOIs
Publication statusPublished - 2006 Dec 1
EventIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States
Duration: 2006 Nov 272006 Dec 1

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Other

OtherIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
CountryUnited States
CitySan Francisco, CA
Period06-11-2706-12-01

Fingerprint

Multiple access interference
Code division multiple access
Quality control

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Chang, C-W., & Wang, L. C. (2006). A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading. In IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference [4151259] (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2006.629
Chang, Chih-Wen ; Wang, Li Chun. / A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading. IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference. 2006. (GLOBECOM - IEEE Global Telecommunications Conference).
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Chang, C-W & Wang, LC 2006, A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading. in IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference., 4151259, GLOBECOM - IEEE Global Telecommunications Conference, IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference, San Francisco, CA, United States, 06-11-27. https://doi.org/10.1109/GLOCOM.2006.629

A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading. / Chang, Chih-Wen; Wang, Li Chun.

IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference. 2006. 4151259 (GLOBECOM - IEEE Global Telecommunications Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Chang C-W, Wang LC. A joint subcarrier power allocation and interference avoidance code assignment strategy for multi-rate MC-DS-CDMA with TF-domain spreading. In IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference. 2006. 4151259. (GLOBECOM - IEEE Global Telecommunications Conference). https://doi.org/10.1109/GLOCOM.2006.629