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The full potential of multiple-input multiple-output (MIMO) wireless technology can be achieved through iterative MIMO decoding with soft information. In iterative MIMO decoder, the complexity can be major obstacle for practical implementation. The soft interference cancellation-minimum mean squared error (SIC-MMSE) approach for detection is considered as a feasible approach due to its complexity-performance...
Vehicular Ad Hoc Networks (VANET) have become one of the most important research areas for the successful and deployment of intelligent transportation system and the unmanned vehicle technologies. In VANET, Travel Prediction-based Data Forwarding (TPD) was proposed as one of novel data forwarding schemes based on road traffic statistics. However, the TPD could not guarantee good performance in the...
The purpose of this research is proposing a theory to verify the influence of virtual props trading sites to game loyalty of players. The objects of sampling aims at users who are actually engaged in online games props trading sites. A survey of 459 game players in Taiwan was conducted; research results were generated through the use of descriptive analysis, reliability analysis, correlation analysis,...
Recently, in addition to orthodontic for correction of snaggletooth and malocclusion, orthodontic for enhancing facial aesthetics is also gaining interest. There is Nasolabial Angle as a criterion to judge the esthetics of the face. When the nasolabial angle is smaller than the standard, it is often judged as a bimaxillary protrusion. In this paper, we propose a system to calculate the nasolabial...
In this paper, we propose a real-time detection algorithm using a MCT AdaBoost classifier which detects two-wheeler in a blind spot. The proposed algorithm uses a cascade classifier generated by AdaBoost learning based on the MCT feature vector. The MCT AdaBoost classifier is composed of weak classifiers as many as the number of pixels of the detection window, and each pixel becomes a weak classifier...
This paper proposes a blind interleaver period estimation algorithm by sorting error-less symbols. After finding the error-less symbols through the rank distribution of the square matrices, we construct a rectangular matrix by locating errorless symbols on the top of a matrix. By analyzing this matrix, we can estimate the interleaver period. Experimental results show that the proposed algorithm has...
Polar coding is a low-complexity method for communication over noisy classical channels, which is capable of providing highly reliable data transmission. This paper proposes an enhanced polar codec scheme for mission critical applications in train-to-ground wireless communications. Firstly, we develop an enhanced polar coding scheme to support reliable data transmission under time-varying channel...
This paper considers a relayed broadcast in IEEE 802.11 wireless local area (WLAN) networks. In the relayed broadcast, a source node intends to deliver data frames to many nodes beyond its coverage and all the nodes except the source node attempt to relay the received data frames in a contention-based and distributed manner. This traffic dissemination scheme, referred to as flooding, has several problems...
This paper proposes a reliable MAC protocol for a fully distributed Vehicular Ad-Hoc Network (VANET) using the slot states sharing scheme. Recently, technology for reliably transmitting safety messages in VANET has become an issue. With VANET (operating on the IEEE 802.11p standard), as the number of vehicles increases on the highway, the network traffic also increases. It causes more frequent packet...
This paper proposes two non-uniform quantization schemes and also introduces an implementation system based on Software Defined Radio (SDR) consisting of GNU Radio and Universal Software defined Radio Peripheral (USRP) to sense a spectrum. In cognitive radio (CR) systems, detection and error probability are representative indicators of system performance. These performance indicators are influenced...
Considering unreliable wireless backhaul connections across transmitters, we investigate the outage performance of a finite-sized selective relaying system with M transmitters and N relays under Nakagami-m fading channels. To send the source message to the destination, the transmitter-relay pair providing the highest end-to-end signal-to-noise ratio is selected for transmission. The backhaul reliability...
In this paper, we propose a tele-commanding system model based on delay tolerant network (DTN) for the space communication. For designing this model, we use asynchronous message service (AMS) which is one of application services of DTN. We propose the tele-commanding algorithm, which allows AMS messages to be recognized as a tele-commands. This enables nodes received a tele-command message to conduct...
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