Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying

Chunyi Song, Shigeru Shimamoto

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

    Abstract

    Some modulation schemes with the general name of Elliptical Modulation Schemes, have been proposed and evaluated, in terms of Bit-Error-Rate (BER) performance, namely are Eccentricity Shift Keying (ESK), Inclination Angle Shift Keying (IASK), Rotation Frequency Shift Keying (RFSK) and Elliptical Phase Shift Keying (EPSK). Based on their advantages over existing modulation schemes, this paper aimed to confirm the contributions of 4-EPSK, one of Elliptical Modulation Schemes with 2-bit information transmission capability, to the improvement of CDMA communication systems. In the paper, we investigated the possible applications of 4-EPSK to CDMA systems, through evaluating BER performance of synchronous DS-CDMA by employing 4-EPSK as its modulation scheme, with an M-sequence and an orthogonal Gold sequence respectively, along with comparison to that of DS-CDMA by employing QPSK; simulation results have been achieved based on changeable number of users, under AWGN and flat Rayleigh fading environment respectively. Advantages of DS-CDMA-4-EPSK over existing DS-CDMA-QPSK achieved in simulations, implies that by employing 4-EPSK as its modulation scheme, CDMA systems can be improved in terms of BER performance.

    Original languageEnglish
    Title of host publication2004 IEEE International Symposium on Consumer Electronics - Proceedings
    Pages266-271
    Number of pages6
    Publication statusPublished - 2004
    Event2004 IEEE International Symposium on Consumer Electronics - Proceedings - Reading
    Duration: 2004 Sep 12004 Sep 3

    Other

    Other2004 IEEE International Symposium on Consumer Electronics - Proceedings
    CityReading
    Period04/9/104/9/3

    Fingerprint

    Phase shift keying
    Bit error rate
    Code division multiple access
    Modulation
    Quadrature phase shift keying
    Frequency shift keying
    Rayleigh fading
    Communication systems
    Gold

    Keywords

    • 4-EPSK
    • BER
    • DS-CDMA
    • Number of user

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Song, C., & Shimamoto, S. (2004). Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying. In 2004 IEEE International Symposium on Consumer Electronics - Proceedings (pp. 266-271)

    Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying. / Song, Chunyi; Shimamoto, Shigeru.

    2004 IEEE International Symposium on Consumer Electronics - Proceedings. 2004. p. 266-271.

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

    Song, C & Shimamoto, S 2004, Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying. in 2004 IEEE International Symposium on Consumer Electronics - Proceedings. pp. 266-271, 2004 IEEE International Symposium on Consumer Electronics - Proceedings, Reading, 04/9/1.
    Song C, Shimamoto S. Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying. In 2004 IEEE International Symposium on Consumer Electronics - Proceedings. 2004. p. 266-271
    Song, Chunyi ; Shimamoto, Shigeru. / Improvement on bit-error-rate performance of DS-CDMA by employing 4-elliptical phase shift keying. 2004 IEEE International Symposium on Consumer Electronics - Proceedings. 2004. pp. 266-271
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