Digital Television for Mobile Devices

Zhou, Jiehan; Ou, Zhonghong; Rautiainen, Mika; Koskela, Timo; Ylianttila, Mika

doi:10.1109/mmul.2009.7

Cited by 27 publications

(11 citation statements)

References 18 publications

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“…-Turbo Encoding: The main purpose of the turbo code is to exploit the frequency-diversity inherent in the channel. It is the same turbo code defined in the cdma2000 and 1x-EV-DO standards [2,3]. Multiple code rates are supported in FLO, typically {1/3, 1/2, 2/3}.…”

Section: The Flo Standard For Mobile Televisionmentioning

confidence: 99%

“…Mobile operators are in the process of expanding their services beyond voice and short messaging, looking for new avenues of income [2]. Although 3G networks were conceived to cover new applications for mobile users, mass market for video applications is limited by spectrum availability and some other barriers that have to be addressed [3].…”

Section: Introductionmentioning

confidence: 99%

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An architecture for design and planning of mobile television networks

Tamayo-Fernández

Mendoza-Valencia

Serrano-Santoyo

2011

JART

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Mobile television (TV), made possible by the convergence of media, telecommunications and consumer electronicsindustries, is one of the most hyped new mobile services in several countries [1]. The advertised key features ofmobile TV are personalization, interactivity, and most importantly, the ability to watch TV programming while on thego. The deployment of a mobile TV network consists of several stages that require careful planning. There areavailable simulation packages for designing wireless technologies, however, for mobile TV there are still planning and simulations concerns that have to be addressed in order to identify its design challenges. This article reviews the mainparameters that should be taken into account to support the design and planning of a mobile TV network andproposes an architecture for its implementation.

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Section: The Flo Standard For Mobile Televisionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An architecture for design and planning of mobile television networks

Tamayo-Fernández

Mendoza-Valencia

Serrano-Santoyo

2011

JART

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“…Consequently, there is an increasing demand for OFDM systems operating in high mobility environments, including systems for applications such as digital multimedia broadcasting (DMB), digital video broadcast-handheld (DVB-H), media forward link only (MediaFLO) and wireless metropolitan area networks (WiMAX) [2]- [4]. For broadband OFDM systems, high speed movement of mobile terminals causes Doppler spread and results in time-varying multipath channels, i.e., doubly selective channels (DSCs).…”

Section: Introductionmentioning

confidence: 99%

Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels

He¹,

Ma²,

Wu³

et al. 2011

IEEE Trans. Signal Process.

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Abstract-In this paper, pilot-aided in-phase and quadraturephase (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 least squares (LS) criterion, a joint IQ imbalance and channel estimation method is developed, and the corresponding compensation scheme is also proposed. Moreover, to further enhance the compensation performance, an iterative compensation algorithm is derived via an expectation-maximization (EM) algorithm. Simulation results show that the iterative compensation algorithm initialized by the proposed LS compensation scheme converges in a few iterations and its performance after convergence is close to the ideal case with perfect IQ imbalance and channel state information.Index Terms-Channel estimation, doubly selective channel (DSC), in-phase and quadrature-phase (IQ) imbalance, intercarrier interference (ICI), orthogonal frequency division multiplexing (OFDM).

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“…Recently, there is an increasing demand for OFDM systems operating in high mobility environment, such as Digital Multimedia Broadcasting (DMB), DVB-H (Digital Video Broadcast-Handheld), Media Forward Link Only (MediaFLO) and Wireless Metropolitan Area Networks (WiMAX) [4]- [6]. For broadband OFDM systems, high speed movement of mobile terminals causes Doppler spread and results in multipath time-varying channels, i.e., doubly selective channels (DSCs).…”

Section: Introductionmentioning

confidence: 99%

Semiblind Iterative Data Detection for OFDM Systems with CFO and Doubly Selective Channels

He¹,

Ma²,

Wu³

et al. 2010

IEEE Trans. Commun.

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Abstract-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 iteratively estimates the CFO, channel and recovers the unknown data using only limited number of pilot subcarriers in one OFDM symbol. In addition, efficient initial CFO and channel estimates are also derived based on approximated maximum likelihood (ML) and minimum mean square error (MMSE) criteria respectively. Simulation results show that the proposed data detection algorithm converges in a few iterations and moreover, its performance is close to the ideal case with perfect CFO and channel state information.Index Terms-Carrier frequency offset (CFO), orthogonal frequency division multiplexing (OFDM), doubly selective channel (DSC), data detection, expectation-maximization (EM).

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Digital Television for Mobile Devices

Cited by 27 publications

References 18 publications

An architecture for design and planning of mobile television networks

An architecture for design and planning of mobile television networks

Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels

Semiblind Iterative Data Detection for OFDM Systems with CFO and Doubly Selective Channels

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