@conference {
	title = {A Video Transmission System Based on Human Visual Model},
	author = {Jiang, Yimin., Gu, Junfeng., Baras, John S.},
	year = {1999},
	month = {09/1999},
	abstract = {This paper presents a joint source-channel coding scheme of digital video broadcasting over satellite channel. The video compression is based on human visual model. Perceptual distortion model the just-noticeable-distortion (JND) is applied to improve the subjective quality of compressed videos. 3-D wavelet decomposition can remove spatial and temporal redundancy and provide scalability of video quality. In order to conceal the errors occurred under bad channel conditions, a novel slicing method and a joint source channel coding scenario that combines RCPC with CRC and utilizes the distortion information to allocate convolutional coding rates are presented. A new performance index based on JND is proposed and used to evaluate the overall performance at different signal-to-noise ratios(SNR). Our system uses OQPSK modulation scheme.},
	address = {Amsterdam, Netherlands},
	booktitle = {IEEE VTC 1999},
	pages = {pp. 868-873}
}
@conference {
	title = {VLSI Implemented Data-Aided ML Parameter Estimators of PSK Burst Modems},
	author = {Jiang, Yimin., Ting, Wen-Chun., Verahrami, Farhad., Richmond, Robert L., Baras, John S.},
	year = {1999},
	month = {09/1999},
	abstract = {A high-performance universal modem ASIC that supports several modulation types and burst mode frame formats are under development. The ASIC is designed to work under stringent conditions such as large carrier frequency offset (up to 13\% symbol rate) and low signal-to-noise ratio (SNR). Powerful and generic data-aided parameter estimators are necessary to accommodate many modes. In this paper, we present an approximated maximum likelihood (ML) carrier frequency offset estimator, ML joint carrier phase, and timing offsets estimator and their systolic VLSI implementations for PSK burst modems. The performances are close to the Cramer-Rao lower bounds at low SNRs. Compared with theoretical solutions the estimators proposed here are much simpler and easier to implement by the current VLSI technology.},
	address = {Amsterdam, Netherlands},
	booktitle = {1999 Vehicular Technology Conference},
	pages = {pp.733-738}
}
@conference {
	title = {Caching and Multicasting in DBS systems},
	author = {Liu, Mingyan., Karir, Manish., Baras, John S.},
	year = {1999},
	month = {09/1999},
	abstract = {The use of caching and multicasting has been studied extensively in the context of terrestrial networks. However, the use of these technologies in a Direct Broadcast Satellite (DBS) system remains unclear. In this paper, we discuss possible choices of caching and multicasting schemes, motivated by current applications in the terrestrial Internet, that could be considered for a DBS system. We examine their advantages and disadvantages as well as the tradeoffs involved in combinations of different approaches. We also propose some uses of these technologies and describe an architecture that enhances the performance and efficiency of a DBS system.},
	address = {Aizu, Japan},
	booktitle = {1999 International Workshop on Group Communications},
	pages = {pp. 56-61}
}
@conference {
	title = {VLSI implemented ML joint carrier phase and timing offsets estimator for QPSK/OQPSK burst modems},
	author = {Jiang, Yimin., Verahrami, Farhad., Ting, Wen-Chun., Richmond, Robert L., Baras, John S.},
	year = {1999},
	month = {09/1999},
	abstract = {A high-performance ASIC supporting multiple modulation, error correction, and frame formats is under development at Hughes Network Systems, Inc. Powerful and generic data-aided (DA) estimators are needed to accommodate operation in the required modes. A simplified DA maximum likelihood (ML) joint estimator for carrier phase and symbol timing offset for QPSK/OQPSK burst modems and a sample systolic VLSI implementation for the estimator are presented. Furthermore, the Cramer-Rao lower bound (CRLB) for DA case is investigated. The performance of the estimator is shown through simulation to meet the CRLB even at low signal-to-noise ratios (SNR). Compared with theoretical solutions, the proposed estimator is less computationally intensive and is, therefore, easier to implement using current VLSI technology},
	address = {New Orleans, Louisiana},
	booktitle = {Proceedings of Wireless Communications and Networking Conference},
	pages = {pp. 742-746}
}
