Zobrazeno 1 - 10
of 423
pro vyhledávání: '"Tung Sang Ng"'
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2008 (2008)
This paper addresses the joint robust power control and beamforming design of a linear multiuser multiple-input multiple-output (MIMO) antenna system in the downlink where users are subjected to individual signal-to-interference-plus-noise ratio (SIN
Externí odkaz:
https://doaj.org/article/44b70d070bed45cb95435140ed21ccb7
Publikováno v:
Journal of Hazardous Materials. 272:148-154
This study examined the fate and behaviour of perfluoroalkyl acids (PFAAs) in liquid and solid samples from five different wastewater treatment types: facultative and aerated lagoons, chemically assisted primary treatment, secondary aerobic biologica
Publikováno v:
IEEE Transactions on Signal Processing. 60:274-284
In this paper, joint channel estimation and data detection in orthogonal frequency division multiplexing (OFDM) amplify-and-forward (AF) cooperative systems under high mobility is investigated. Unlike previous works on cooperative systems in which a
Publikováno v:
IEEE Transactions on Wireless Communications. 10:4122-4129
This paper investigates an opportunistic cooperative system with multiple relays. The locations of the relays are essentially random due to their unpredictable mobility and are thus assumed to form a spatial Poisson process. A general analytical appr
Publikováno v:
IEEE Transactions on Signal Processing. 59:2223-2233
In this paper, pilot-aided in-phase and quadrature-phase (IQ) imbalance compensation for orthogonal frequency division multiplexing (OFDM) systems operating over doubly selective channels is addressed. Based on a reformulated system model and the lea
Publikováno v:
IEEE Transactions on Communications. 59:1190-1199
Cooperative communications can significantly enhance the performance of wireless systems by exploiting the inherent spatial diversity gains. In this work, a decode-and-forward cooperative cellular system with spatial random users is investigated. Und
Publikováno v:
International Journal of Circuit Theory and Applications. 39:149-158
We analyze the existing bi-level IIR-based bit-stream multiplier and propose selection criteria for the key design parameter governing droop and phase linearity. Based on the proposed choice of parameter, we then extend the bi-level design to tri- an
Publikováno v:
IEEE Transactions on Communications. 58:3491-3499
Data detection for OFDM systems over unknown doubly selective channels (DSCs) and carrier frequency offset (CFO) is investigated. A semiblind iterative detection algorithm is developed based on the expectation-maximization (EM) algorithm. It iterativ
Autor:
Tung-Sang Ng, Yiqing Zhou
Publikováno v:
IEEE Transactions on Wireless Communications. 8:4426-4433
This letter proposes an analytical approach to evaluate the performance of MIMO-OFCDM systems with multicode transmission. Assuming zero-forcing successive interference cancellation (ZF-SIC) in the space domain and MMSE detection in the frequency dom
Publikováno v:
IEEE Transactions on Communications. 57:2264-2268
This letter addresses the problem of symbol error probability (SEP) analysis for maximum likelihood (ML) detection in multiple-input multiple-output (MIMO) multiplexing systems. A new analytical method is presented based on the total probability theo