Pilot-signal aided multiuser timing estimation in DS-CDMA communications

TitlePilot-signal aided multiuser timing estimation in DS-CDMA communications
Publication TypeConference Paper
Year of Publication1999
AuthorsChang, C. 'o- M., M. Zeng, K. - C. Chen, and V. K. Bhargava
Conference NameGlobal Telecommunications Conference, 1999. GLOBECOM '99
Pagination532 -536 vol. 1a
Keywordsbinary sequences, binary-valued training sequences, code division multiple access, complexity reduction, computational complexity, DS-CDMA communications, linear-complexity, multiuser channels, multiuser synchronization, optimum multiuser timing estimators, parameter estimation, performance enhancement, pilot-signal aided multiuser timing estimation, spread spectrum communication, suboptimum timing estimator, synchronisation, timing, training sequences

Most works on multiuser synchronization do not utilise pilot signals to facilitate their designs. Although these approaches are suitable for general cases, pilot-signal aided schemes potentially outperform these generalized designs over either complexity reduction or performance enhancement. In this paper, utilizing specially designed training sequences, optimum multiuser timing estimators with linear-complexity are introduced for practical applications. In addition, a suboptimum timing estimator based on binary-valued training sequences is also proposed. These pilot-signal aided approaches are mathematically and numerically confirmed to be effective for practical applications


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