Multiple antenna systems

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Optimality of beamforming condition for multiple antenna systems with mean feedback

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Analysis of Vector Quantizers Using Transformed Codebooks with Application to Feedback-Based Multiple Antenna Systems

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: PhantomNet: Exploring Optimal Multicellular Multiple Antenna Systems

    pdf14p sting12 11-03-2012 8 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: A Multiple-Antenna System for ISM-Band Transmission

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Timing-Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae

    pdf16p sting12 11-03-2012 20 5   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Flexible Transmission Scheme for 4G Wireless Systems with Multiple Antennas

    pdf15p sting11 10-03-2012 15 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Multihop relaying and multiple antenna techniques: performance trade-offs in cellular systems

    pdf19p sting04 07-02-2012 9 2   Download

  • You will understand the physical meaning behind the mathematics of wireless signals and learn the intricacies and tradeoffs in signal selection and design.

    pdf903p dangkhoa1612 18-05-2013 76 41   Download

  • ADC’s Digivance® Street-Level Coverage Solution (SCS) helps wireless service providers improve capacity in areas where restrictive zoning requirements prohibit deployment of traditional base station network equipment. The SCS distributed antenna system (DAS) utilizes patented digital RF transport-overfiber technology to distribute wireless service between existing cell sites and SCS remote antenna units. The small-form-factor, environmentally hardened, Remote Units offer multiple mounting options that easily blend into the existing environment.

    pdf8p halanh 14-08-2009 69 11   Download

  • Tham khảo sách 'imobile and wireless communications: physical layer development and implementation', kỹ thuật - công nghệ, kĩ thuật viễn thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf0p 123859674 30-06-2012 49 10   Download

  • This book covers the most recent advances concerning the ability to overcome connectivity limitations and extend the link capacity of vehicular systems. Ranging from the advances on radio access technologies to intelligent mechanisms deployed to enhance cooperative communications, cognitive radio and multiple antenna systems have been given particular highlight.

    pdf0p ktcn_1 10-07-2012 31 6   Download

  • Wireless communications is one of the most active areas of research over the past and the current decades. In fact, the demand for wireless services has been changing from the regular voice telephony services to mixed voice, data, and multimedia services over the wireless media. Since the mid-1990s, the wireless industry has been advancing at an incredible speed. For example, the 2G cellular systems (such as GSM, D-AMPS, and IS-95) have significantly improved the spectral efficiency and network capacity to support wireless telephony services....

    pdf544p gian_anh 18-10-2012 19 5   Download

  • This report has been reviewed in draft form by persons chosen for their diverse perspectives and technical expertise in accordance with procedures approved by the National Research Council’s Report Review Committee. The purposes of this review are to provide candid and critical comments that will assist the institution in making the published report as sound as possible and to ensure that the report meets institutional standards of objectivity, evidence, and responsiveness to the study charge.

    pdf79p mnemosyne75 02-02-2013 18 3   Download

  • This book provides a comprehensive introduction to the underlying theory, design techniques and analytical tools of wireless communications, focusing primarily on the core principles of wireless system design. The book begins with an overview of wireless systems and standards. The characteristics of the wireless channel are then described, including their fundamental capacity limits. Various modulation, coding, and signal processing schemes are then discussed in detail, including state-of-the-art adaptive modulation, multicarrier, spread spectrum, and multiple antenna techniques....

    pdf0p huemanvdoc 20-11-2009 157 50   Download

  • The Digivance Indoor Coverage Solution (ICS) is used to extend coverage to specific areas within a building, multiple buildings, or throughout a campus environment. This digital distributed antenna system (D-DAS) solution features unique, patented technology that distributes wireless coverage digitally over optical fiber, making Digivance ICS the best choice for signal quality, flexibility, and overall performance. Its digitized optical RF transport also future-proofs in-building wireless infrastructure for higher data rate services.

    pdf12p halanh 14-08-2009 149 28   Download

  • Today’s cable systems serve up more than just television. Because community antenna television (CATV) systems now incorporate high-speed data and telephony services, signal flow is critical for multiple systems operators (MSOs) and their customers. Signal levels and network configurations must evolve to meet the new service demands of transitioning headends. The impending challenge for MSOs is to effectively manage their networks amid change and maintain maximum uptime for subscribers.

    pdf8p halanh 13-08-2009 106 12   Download

  • Segment Design Tradeoffs I. OVERVIEW The six steps in the systems-level design process associated with the software radio are illustrated in Figure 6-1. The tradeoffs proceed from front end to back end. The choice of antennas (step 1 in the figure) determines the number and bandwidth of RF channels (step 2). This, in turn, constrains the numbers and bandwidths of ADCs (step 3). Some waveforms may require dedicated ASICs (e.g., W-CDMA despreaders) in front of the ADCs. Additional parallel IF processing and ADC paths may be necessary to support multiple-service bands simultaneously....

    pdf8p tienvovan 11-09-2010 51 8   Download

  • Hybrid Multiple Access Schemes The simultaneous transmission of multiple data streams over the same medium can be achieved with different multiplexing schemes. Most communications systems, such as GSM, DECT, IEEE 802.11a, and HIPERLAN/2, use multiplexing based on either time division, frequency division or a combination of both. Space division multiplexing is applied to further increase the user capacity of the system. The simplest scheme of space division multiplexing is antenna sectorization at the base station where often antennas with 120◦ /90◦ beams are used....

    pdf21p huggoo 20-08-2010 45 3   Download

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