Abstract: Performing cell search in a wireless communications system includes receiving a preamble signal, match filtering the preamble signal with a pseudo noise sequence to form a filtered preamble signal of a plurality of filtered preamble signals, choosing a largest filtered preamble signal from the plurality of filtered preamble signals, and determining an estimated pseudo noise sequence index and an estimated integer part frequency offset according to the largest filtered preamble signal.

Abstract: Vehicle segmentation and counting method based on the property of color variation and headlight information combining change detection in nighttime traffic environment (one-way road with coming direction) is provided. The goal is to reduce the effect of ground-illumination that decreases the accuracy of vehicle segmentation. Besides, the amount of traffic flow is calculated and it can be used in other post-applications, such as traffic-flow reporting or controlling.

Abstract: A hinge device includes a coupler having two substantially C-shaped outer clamp members which are interconnected back-to-back at a juncture and which respectively have open mouths opposite to the juncture, and two substantially cylindrical inner clamp members fitted rotatably and respectively in the outer clamp members. Each inner clamp member has a substantially cylindrical outer surface, and two clamping arms defining an axially extending clamping groove therebetween. The clamping groove has a groove opening alignable with the open mouth of one of the outer clamp members. A hoop assembly having two hoops interconnected hingedly by the hinge device is also disclosed.

Abstract: A hinge device includes: a coupler including a connection part connected to at least three outer clamp members which respectively have open mouths; and at least three inner clamp members fitted rotatably and respectively in the outer clamp members. Each of the inner clamp members has an outer surface surrounding an axis, and two clamping arms defining an axially extending clamping groove therebetween. The clamping groove has a groove opening alignable with the open mouth of one of the outer clamp members. A hoop assembly having at least three hoops interconnected hingedly by the hinge device is also disclosed.

Abstract: Performing cell search in a wireless communications system includes receiving a preamble signal, match filtering the preamble signal with a pseudo noise sequence to form a filtered preamble signal of a plurality of filtered preamble signals, choosing a largest filtered preamble signal from the plurality of filtered preamble signals, and determining an estimated pseudo noise sequence index and an estimated integer part frequency offset according to the largest filtered preamble signal.

Abstract: A hinge device includes a coupler having two substantially C-shaped outer clamp members which are interconnected back-to-back at a juncture and which respectively have open mouths opposite to the juncture, and two substantially cylindrical inner clamp members fitted rotatably and respectively in the outer clamp members. Each inner clamp member has a substantially cylindrical outer surface, and two clamping arms defining an axially extending clamping groove therebetween. The clamping groove has a groove opening alignable with the open mouth of one of the outer clamp members. A hoop assembly having two hoops interconnected hingedly by the hinge device is also disclosed.

Abstract: Vehicle segmentation and counting method based on the property of color variation and headlight information combining change detection in nighttime traffic environment (one-way road with coming direction) is provided. The goal is to reduce the effect of ground-illumination that decreases the accuracy of vehicle segmentation. Besides, the amount of traffic flow is calculated and it can be used in other post-applications, such as traffic-flow reporting or controlling.

Abstract: This invention provides a system and a method of the optical delay line, wherein the system comprises a source and an array of mirrors, wherein the array of mirrors comprises a first reflective mirror, a second reflective mirror, a third reflective mirror, and a fourth reflective mirror. Beams from the source could be delayed because the beams are multi-reflected by the reflective mirrors.

Abstract: This invention provides a system and a method of the optical delay line, wherein the system comprises a source and an array of mirrors, wherein the array of mirrors comprises a first reflective mirror, a second reflective mirror, a third reflective mirror, and a fourth reflective mirror. Beams from the source could be delayed because the beams are multi-reflected by the reflective mirrors.

Abstract: A system and method for transmitting data in multiple-branch transmitter-diversity OFDM systems is presented. In one embodiment, an approach is taken where an inverse Fourier transform (IFT) is performed on data prior to encoding the data for transmission in the multiple-branch transmitter-diversity system. In another embodiment an IFT is performed on data prior to encoding the data using a space-time block code (STBC) algorithm.

Abstract: A system and method for transmitting data in multiple-branch transmitter-diversity OFDM systems is presented. In one embodiment, an approach is taken where an inverse Fourier transform (IFT) is performed on data prior to encoding the data for transmission in the multiple-branch transmitter-diversity system. In another embodiment an IFT is performed on data prior to encoding the data using a space-time block code (STBC) algorithm.

Abstract: A system and method for estimating channel characteristics in orthogonal frequency-division multiplexing (OFDM) systems with transmitter diversity is presented. The disclosed approach is compatible with the Institute of Electrical and Electronics Engineers (IEEE) “Wireless Local Area Network (LAN) Medium Access Control (MAC) and Physical Layer (PHY) Specification.” In the disclosed system and method, an additional training symbol is transmitted during the data period. This provides additional information that may be used to more accurately estimate channel characteristics.

Abstract: A method is directed to recovering a digital data content in a communication system, wherein the digital data content has been converted into an analog signal based on a primary clock, at a transmitter for transmitting to a receiver. The method comprises receiving the analog signal by the receiver. The analog signal is converted into a digital signal, based on a clock of the receiver. The digital signal is interpolated at the desired interpolation point, if digital signal in time has been shifted by an amount equal to or larger than a predetermined time length. The interpolated digital signal is recovered back to the digital data content, with the assist of an estimated channel impulse response. The channel impulse response is retrained every time when the interpolation point is significantly changed.

Abstract: In a receiver, two low-pass equivalent signal detection criterions when the timing, phase and amplitude of the received signal are known and unknown, respectively, are provided for the detection of the presence of a Barker sequence in a received signal by Neyman-Pearson hypothesis testing rule. In addition, signal quality and link quality to measure the current quality of environments for signal reception are provided by the employment of a differential decoder and a Viterbi decoder in the baseband receiver.