A robust ranging detection with MAI cancellation for OFDMA systems

Chieh Lung Lin, Szu-Lin Su

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

12 Citations (Scopus)

Abstract

During the initial uplink synchronization, the BS communicates with MSs to adjust timing and power offsets. The common method to achieve the objective is to use the orthogonal code in the frequency domain for OFDMA systems. Due to the timing offset, the orthogonality of codes is decayed and multiple access interference (MAI) becomes serious. In order to decrease this influence, we proposed the idea which combines the channel estimation and the multiuser detection. On the strength of cancelling the MAI step by step, ranging users can be detected one by one. The proposed idea is robust to achieve a significant improvement on the ranging detection rate over the multipath Rayleigh fading channel.

Original languageEnglish
Title of host publication13th International Conference on Advanced Communication Technology
Subtitle of host publicationSmart Service Innovation through Mobile Interactivity, ICACT 2011, Proceeding
Pages937-941
Number of pages5
Publication statusPublished - 2011
Event13th International Conference on Advanced Communication Technology: Smart Service Innovation through Mobile Interactivity, ICACT 2011 - Gangwon-Do, Korea, Republic of
Duration: 2011 Feb 132011 Feb 16

Other

Other13th International Conference on Advanced Communication Technology: Smart Service Innovation through Mobile Interactivity, ICACT 2011
CountryKorea, Republic of
CityGangwon-Do
Period11-02-1311-02-16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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  • Cite this

    Lin, C. L., & Su, S-L. (2011). A robust ranging detection with MAI cancellation for OFDMA systems. In 13th International Conference on Advanced Communication Technology: Smart Service Innovation through Mobile Interactivity, ICACT 2011, Proceeding (pp. 937-941)