Zobrazeno 1 - 10
of 66
pro vyhledávání: '"S. Ariyavisitakul"'
Autor:
S. Ariyavisitakul, S.L. Woodward
Publikováno v:
IEEE Transactions on Vehicular Technology. 48:1033-1038
We have investigated transmitting wireless code division multiple-access (CDMA) signals from a remote antenna to a centralized base station over an analog optical link. We present specifications for transmission of standard (IS.95) CDMA signals and d
Publikováno v:
IEEE Journal on Selected Areas in Communications. 17:461-471
Transmitter diversity is an effective technique to improve wireless communication performance. In this paper, we investigate transmitter diversity using space-time coding for orthogonal frequency division multiplexing (OFDM) systems in high-speed wir
Autor:
S. Ariyavisitakul, Ye Li
Publikováno v:
IEEE Journal on Selected Areas in Communications. 16:1670-1678
This paper introduces a new approach for joint convolutional coding and decision feedback equalization (DPE). To minimize error propagation, the DFE uses a combination of soft decisions and delayed tentative decisions to cancel intersymbol interferen
Publikováno v:
IEEE Transactions on Communications. 45:1497-1500
This paper presents an adaptive tap assignment technique for improving the performance of a previously reported reduced-complexity decision-feedback equalizer (DFE) for broadband band wireless systems. The spacings of individual feedforward taps of t
Autor:
S. Ariyavisitakul, K.J. Kerpez
Publikováno v:
IEEE Transactions on Vehicular Technology. 45:265-275
This paper analyzes a radio access system that has multiple antennas spatially distributed throughout each cell, instead of a single antenna at each cell. The same signal is simulcast by each antenna in the cell. The signals at a given cell could be
Autor:
S. Ariyavisitakul, Li Fung Chang
Publikováno v:
IEEE Transactions on Communications. 42:597-605
For pt.I see ibid., vol 41, p.1626-34 (1993). Power control is essential in the use of direct-sequence code division multiple-access (CDMA) techniques. Early system-level performance analyses of a CDMA approach to wireless mobile and personal communi
Autor:
S. Ariyavisitakul, null Li Fung Chang
Publikováno v:
IEEE Transactions on Communications. 41:1626-1634
Publikováno v:
IEEE Transactions on Communications. 41:22-31
A combined burst synchronization and error detection scheme is studied for a time-division multiple access (TDMA) portable radio system. Analysis, computer simulation, and experimental results of the false acceptance rate of the system using the comb
Autor:
S. Ariyavisitakul
Publikováno v:
IEEE Journal on Selected Areas in Communications. 10:599-613
This work describes the use of a receiver with a time-reversal structure for low-complexity decision feedback equalization of slowly fading dispersive indoor radio channels. Time-reversal is done by storing each block of received signal samples in a
Autor:
S. Ariyavisitakul
Publikováno v:
IEEE Journal on Selected Areas in Communications. 10:589-598
Describes a low-complexity equalization technique for improving the reliability of portable radio links in the presence of multipath time delay spread. A technique that operates on hard-limited received signals, with only the phase information availa