Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Justin C. Chuang"'
Publikováno v:
International Journal of Wireless Information Networks. 11:29-39
Using the enhanced data rates for GSM evolution (EDGE) system with cyclic frequency hopping as an example, we apply a Kalman-filter power control method based on interference tracking to packet voice service in wireless networks. Our results show tha
Publikováno v:
Wireless Personal Communications. 20:41-60
This paper presents an equalization structure in which antenna diversity, adaptive decision feedback equalization (DFE), interleaving and trellis-coded modulation (TCM) can be effectively combined to combat both ISI and cochannel interference in cell
Autor:
Nelson Sollenberger, Justin C. Chuang
Publikováno v:
IEEE Communications Magazine. 38:78-87
The rapid growth of wireless voice subscribers, the growth of the Internet, and the increasing use of portable computing devices suggest that wireless Internet access will rise rapidly over the next few years. Rapid progress in digital and RF technol
Publikováno v:
IEEE Journal on Selected Areas in Communications. 18:1063-1074
We describe a method to maintain quality for video transported over wireless channels. The method is built on three fundamental blocks. First, we use a transcoder that injects spatial and temporal resilience into an encoded bitstream. The amount of r
Publikováno v:
IEEE Personal Communications. 7:20-33
The Enhanced General Packet Radio Services is one of the proposals submitted to the IMT-2000 initiative of the ITU for third-generation wireless services. EGPRS is also the evolutionary path chosen by the Universal Wireless Communications Consortium,
Autor:
Justin C. Chuang
Publikováno v:
Wireless Personal Communications. 13:167-183
Future wireless networks are expected to employ packet access with high peak-bandwidths demands. This will impose a significant challenge for frequency reuse, especially for services deployed in a wide area. A dynamic packet assignment (DPA) method [
Publikováno v:
IEEE Journal on Selected Areas in Communications. 17:1233-1243
Transmitter diversity and down-link beamforming can be used in high-rate data wireless networks with orthogonal frequency division multiplexing (OFDM) for capacity improvement. We compare the performance of delay, permutation and space-time coding tr
Publikováno v:
IEEE Transactions on Communications. 47:181-184
In this paper, we introduce a simple geometric approach that is based on signal-space concepts to efficiently evaluate the performance of M-ary phase-shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM) schemes over an additive whit
Publikováno v:
IEEE Communications Magazine. 36:150-159
The public's desire for mobile communications and computing, as evidenced by the popularity of cellular phones and laptop computers combined with the explosive demand for Internet access suggest a very promising future for wireless data services. The
Publikováno v:
IEEE Journal on Selected Areas in Communications. 16:1679-1690
This paper investigates the use of a maximum a posteriori probability (MAP) algorithm to realize soft-output equalization in a concatenated equalization and trellis-coded modulation (TCM) decoding-based wireless communication system. Specifically, we