Effect of nanoparticle phosphors on the luminous efficiency in PDP
Investigation into plasma display panel discharge cells has developed over the last few years and has given researchers an insight into luminance efficiency. This paper discusses the effect of both the area size of the microcell discharge and phosphor ...
Adaptive unsymmetrical dither region to improve dynamic false contour in PDPs
Because dynamic false contour (DFC) can be improved by selecting a limited number of gray scales in plasma display panels (PDPs), the other gray scales unselected are realized by dither. In order to reduce the noises caused by dither, a method using ...
A 1.62/2.7Gbps clock and data recovery with pattern based frequency detector for displayport
A clock and data recovery (CDR) for the physical layer of DisplayPort at sink side is described. A 1/5-rate linear phase detector (PD) compares the phase of the incoming data with that of sampling clock to recover a clean clock and data. A pattern based ...
Cost effective design and implementation of scanning-based LED backlight for LCD module
Blurring effects in liquid crystal display can be observed in motion pictures if the response time of the liquid crystal molecules is not fast enough. In this study, a cost-effective architecture for backlight control system is proposed with scanning ...
Programmed driving waveforms for quick-response liquid powder displays
A low optical contrast ratio is the major drawback of quick-response liquid powder displays (QRLPDs). In this paper, the electro-optical response of the QRLPD is analyzed, and better optical contrast is found to be obtained if the display is driven by ...
A high-efficient sustain driver with low current stresses for plasma displays
A high-efficient sustain driver for plasma display panels is proposed to recover energy stored in the resonant inductors as well as in the panel capacitors. By simply rearranging the circuit components without any additional devices, the developed ...
A local dimming algorithm for low power LCD TVs using edge-type LED backlight
A local dimming algorithm is proposed to reduce the power consumption of LCD TVs using edge-type LED backlight. The proposed local dimming algorithm is implemented by matrix driving of orthogonally located LEDs at the edge of the backlight. The dimming ...
A power-of-two FFT algorithm and structure for DRM receiver
Digital Radio Mondiale (DRM) is the most important technology to replace analog AM broadcasting into digital one. The core of DRM is based on coded orthogonal frequency division multiplexing (COFDM), so it has high spectrum efficiency including the ...
Performance analysis of orthogonal signaling over fast fading channels
This paper analyzes the performance of a system consisting of a central base transmitter transmitting to a group of mobiles with on-off orthogonal modulation over a fast fading channel. Because the channel is changing across the symbol interval, inter-...
Low-cost FFT processor for DVB-T2 applications
An efficient Fast Fourier Transform (FFT) processor is greatly needed for real-time operation in many OFDM applications, such as xDSL, DAB, DVB-T/H, and etc. This paper presents a low-cost Parallel Memory-based FFT (PMB-FFT) processor for DVB-T2 ...
Modeling of the transmission delay in bluetooth piconets under serial port profile
Bluetooth is a key connectivity technology for the deployment of wireless Personal Area Networks as far as it is the most popular low power communication feature incorporated in devices such as laptops or smartphones. This paper proposes an analytical ...
Natural language-based user interface for mobile devices with limited resources
In this paper, we propose a natural language-based interface model to enable a user to articulate a request without having any specific knowledge about a mobile device. In consideration of the very limited computing and memory capacity of the mobile ...
A novel feedforward active noise control structure with spectrum-tuning for residual noise
Active noise control (ANC) technology is becoming popular in consumer electronic products for audio applications. Typical ANC system aims primarily at reducing acoustic noise over the entire frequency band. However, human factors including diversity of ...
An improved timing estimation method for OFDM systems
In this paper, we propose an improved timing estimation method for orthogonal frequency division multiplexing (OFDM) systems. The proposed preamble-aided method is independent of the preamble structure and is based on taking advantage of the whole ...
Impulse noise mitigation techniques for xDSL systems in a real environment
The demand for broadband communications for high data-rate applications has pushed towards the development of novel access technologies. Even if wireless access networks have gained more importance in the last years, wired access networks still remain ...
Performance evaluation of mobile DAB receivers in enhanced packet mode
This paper describes the bit error rate (BER) performance of the Enhanced Packet Mode (EPM) of the Eureka 147 Digital Audio Broadcast (DAB) system in a mobile environment. The BER performance of DAB-EPM is characterized by computer simulations in ...
UWB-FSK: performance tradeoffs for high and low complexity receivers
In this work we explore flexible modulations to allow demodulation using receivers with different complexity and cost. More specifically, we study pulse-based ultra wideband (UWB) communications over channels with dense multipath effects using frequency ...
Design and analyses of a fast feed-forward blind equalizer with two-stage generalized multilevel modulus and soft decision-directed scheme for high-order QAM cable downstream receivers
In the present study, a fast feed-forward blind equalizer with a two-stage generalized multilevel modulus algorithm (GMMA) and soft decision-directed (SDD) scheme was developed for high-order QAM cable receivers on broadcasting downstream wired cable ...
Synchronization for TDS-OFDM over multipath fading channels
Time domain synchronous orthogonal frequency division multiplex (TDS-OFDM) is an effective multi-carrier modulation scheme to improve the spectrum efficiency. However, conventional synchronization algorithm based on the correlation property of the time-...
An efficient iterative frequency domain equalization for ATSC DTV receiver
In this paper, we present an efficient single carrier frequency domain equalization for Advanced Television Systems Committee (ATSC) digital television receiver. The proposed scheme employs iterative cyclic prefix reconstruction (CPR) combined with ...
Low-cost integer frequency offset estimation for OFDM-based DRM receiver
In this paper, we propose an improved and low-cost integer frequency offset (IFO) estimation method by partitioning pilot symbols effectively in an orthogonal frequency division multiplexing based digital radio mondiale (DRM) system. To this end, the ...
Optimised transmission of H.264 scalable video streams over multiple paths in mobile networks
Consumer demand for portable wireless devices such as smartphones or tablets capable of receiving high quality video content has risen sharply in recent years. This paper considers the real-time delivery of streamed H.264 Scalable Video Coding (SVC) ...
Low complexity time-domain channel and delay spread estimation for OFDM systems
A low complexity time-domain channel estimation scheme for OFDM systems is presented. It uses a training symbol (preamble) to estimate the channel impulse response (CIR) in the presence of timing synchronization errors. Its computational complexity is ...
Collision detection and response method for markerless camera-based games using motion boundary estimation
Markerless camera-based games are more immersive and compelling than other types of games. However, it is difficult to select the proper methods for body segmentation and motion detection, because they should be fast processed for real-time responses. ...
Energy-efficient cooperative communication for data transmission in wireless sensor networks
It is a practical challenge to provide reliable and efficient communication for data transmission in wireless sensor networks. To recover from packet losses, conventional approaches tried to use retransmission or FEC mechanisms. However, these ...
Collaborative streaming-based media content sharing in WiFi-enabled home networks
In home networks, it has been challenging to provide flexible and scalable media content sharing among heterogeneous consumer electronic devices. Upcoming industrial standard WiFi-Direct will prompt the popular WiFi-equipped devices to establish instant ...
IP based home automation system
Companies producing consumer products have begun working on ways to control their products over the IP (internet protocol). Multinational electronics firms are marking a fair share of their lines using technologies like the RF ID, a front end to the IP ...
LSWD: localization scheme for wireless sensor networks using directional antenna
In this paper, the accuracy of location estimation of ad hoc deployed sensor nodes for a wireless sensor network in the presence of noisy environment and obstacle is discussed. Considering estimation accuracy, energy efficiency, and range independency, ...
Video transmission over MANETs with enhanced quality of experience
Quality of Experience (QoE) enhancement for a transmitted video sequence in Mobile Ad hoc NETworks (MANETs) is a challenging and important issue in networking research community. Intrinsic high levels of packet error probability in MANETs can cause high ...
UPnP network bridge for supporting interoperability through non-IP channels
UPnP (Universal Plug and Play) is widely used to organize home network systems because of its straightforward implementation. However, UPnP networks are based only on TCP/IP, and operation proceeds within a single IP subnet. Previously, no mechanism was ...
