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2-DCCF satellite positioning signal receiver’s design
Friday, December 12th, 2008 at 06:22 | No commentsCategories: Communication NetworksShort Content: Abstract: Introduced now the satellite positioning system (GNSS) in receiver's antenna size enlargement technology, the software radio technology and FPGA realize the technology, as well as they in two-dimensional ballistic correction blasting fuse (2-DCCF) application. Finally, in the article gave has used in revolving the ball two-dimensional ballistic correction blasting fuse's GPS receiving system's principle of work diagram. Key word: Two-dimensional ballistic correction blasting fuse; Satellite positioning signal receiver; Revolving ball Abstract: In this paper, the beam-forming ... -
Remote control vehicle door switch’s safety system design
Thursday, December 11th, 2008 at 17:02 | No commentsCategories: Communication NetworksShort Content: The RKE system regarding enhances automobile's security, the control to have the important meaning. The majority RKE systems have the automobile security, the warning function as well as use in the automobile, suitcase's entrance guard control, some systems also include the function which the remote control start automobile and the automobile seek. New generation RKE uses the two-way communication hopefully, installed controls remotely vehicle door switch PKE in the automobile (Remote Keyless Entry) the plan regarding automobile's disposition, already ... -
Based on PXI main line’s radio frequency instrument’s characteristic and application scope brief analysis
Thursday, December 11th, 2008 at 14:49 | No commentsCategories: Communication NetworksShort Content: Refers to PXI and the hypothesized instrument, possibly will have many engineers to have a summary impression, that will be, the hypothesized instrument will grasp the modulation design concept, will rely on the PXI main line platform, will be adding on uses in common the PC resources, in domains and so on test survey, control, monitoring had already obtained not the vulgar achievement. Might regarding radio frequency PXI measuring instrument's concrete progress, still have many engineers the understanding not to ... -
TD-SCDMA radio frequency power amplifier research
Thursday, December 11th, 2008 at 12:36 | No commentsCategories: Communication NetworksShort Content: TD-SCDMA (synchronization code division multiple access turning on) is third generation mobile communication one of three big mainstream standards, is our country has the proprietary intellectual property rights correspondence standard, it symbolizes that China already entered the world advanced ranks in the mobile communication domain, at present, the TD-SCDMA commercialized advancement is carrying on [1] smoothly. What the TD-SCDMA system uses is the QPSK/8PSK modulation, in the high speed data transmission application, has used like the 16QAM such modulation system. ... -
Realizes - en.51rd.net based on the embedded processor MCF5272 family blue tooth gateway
Tuesday, December 9th, 2008 at 05:02 | No commentsCategories: Communication NetworksShort Content: Abstract: The blue tooth is one kind of short distance wireless communication technology, as a result of its low cost, the low power loss and the redundant reliable merit is widely accepted by the modern family network. In the article introduced the blue tooth technology and the family network basic concept which constitutes by each kind of information electrical appliances, as well as Motorola Corporation's embedded processor MCF5272 some key property characteristic, and elaborated realizes the family blue tooth gateway's ... -
Based on ALE standard embedded RFID middleware design
Tuesday, December 9th, 2008 at 00:36 | No commentsCategories: Communication NetworksShort Content: Abstract: In the EPC technology and the radio frequency recognition (RFID) in the technical rapidly expand and the widespread application, the RFID middleware already was the RFID system's energetic main center. This article narrated the EPC system, the RFID middleware, and has designed one in this foundation based on EPCglobal ALE the standard embedded RFID middleware, enables the standard the RFID middleware to be possible to integrate on the microreader, realizes the integrated thought. Key word: Product electron code; ... -
2G/3G multi-frequency band radio frequency receiving and dispatching chip principle of work and applied analysis
Monday, December 8th, 2008 at 17:56 | No commentsCategories: Communication NetworksShort Content: Along with Chinese 3G development step's quickening, the 3G network construction enters the large scale development, the indoor covers the focal point which into the operator and the equipment system manufacturer pays attention together. Facing the future multi-system coexistent condition, how to construct an economy to be effective, the stable property, the power loss will be low, the volume will be small, and will construct the nimble multi-net closed circuit indoor distribution system is the existing operator is urgently needed ... -
B supersonic radio-frequency signal high speed data gathering system design
Friday, December 5th, 2008 at 16:35 | No commentsCategories: Communication NetworksShort Content: Foreword The acoustic feature difference which the medicine supersonic image formation is uses the ultrasonic wave through human body each organization when reflected to differentiate the different organization, and demonstrates internal organs' contact surface and the organization internal slight structure by the image form. This inspection way unified the ultrasonic physics, the modern electronic technology and the biomedicine and so on many kinds of technologies, is after X image formation technology, develops in the medicine rapidly, applies the most ... -
With realizes - en.51rd.net based on the Atmel wireless sensor node’s research
Sunday, November 30th, 2008 at 07:02 | No commentsCategories: SCMShort Content: The wireless sensor network is the emerging research area, in the military, the environment, the health, the family, the commercial domain and so on many aspects has the huge latent application prospect. The wireless sensor node is composes network the elemental area, the wireless sensor network's rapidly expand, presented many challenges for the wireless sensor node's design and the management. Wireless sensor node The wireless sensor network is the collection data acquisition, processing and the correspondence function in a body ... -
In view of power design SDR solution
Thursday, November 27th, 2008 at 07:55 | No commentsCategories: EDA/PLDShort Content: Because looks like American union tactic radio system (JTRS) such plan, software definition's radio (SDR) was already confirmed. However, many questions are restricting the SDR widespread deployment seriously, the quite important question is a power. The power is in designs time each SDR subsystem's main consideration factor, because specially they must consume the hardware are radio than more powers. For example, to obtain the anticipated radio traffic to be away from (relies on link condition, typical value is ...
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