Regulatory and Policy Implications of Emerging Technologies to Spectrum Management

This paper provides an overview of the policy implications of technological developments, and how these technologies can accommodate an increased level of market competition. It is based on the work carried out in the SPORT VIEWS (Spectrum Policies and Radio Technologies Viable In Emerging Wireless Societies) research project for the European Commission (FP6)spectrum, new radio technologies, UWB, SDR, cognitive radio, Telecommunications, regulation, Networks, Interconnection

Market Research of Multiple Antenna Wi-Fi Wireless Terminal and Its Applications in Port Environments

A current research project of the School of Engineering at Simon Fraser University aims to develop smart antenna integrated Wi-Fi network access point technology to address network connectivity loss on the existing Wi-Fi network infrastructure in the Port of Vancouver, to further extend wireless network coverage and to improve the signal quality. This market research project aims to identify and assess any potential market opportunities for commercializing this SFU technology and IP. This project provides a review of the enabling technologies, investigation of the current market structure and dynamics, a study of customers’ and competitors’ profiles, and competitive environments, a strategic analysis, a SWOT analysis. Utilizing all of this information and analysis, market entry strategic options are presented to assist the technology team to evaluate the market and other environmental factors and choose an appropriate entry strategy. The Balanced Scorecard Method is utilized to choose between the potential strategic options. Findings suggest that the SFU team will face a highly challenging environment with many players competing on technology, standards and distribution channels. As a technology focused team, its key capabilities are not expected to provide competitive advantages in a market where product manufacturing, distribution and marketing efforts will weigh even more on the success than technology alone. In order to leverage its core competencies and capitalize its technological strengths, the technology team is therefore advised to proceed with the option of a forming strategic partnership or alliance with an incumbent equipment manufacturer

Millimeter-wave Wireless LAN and its Extension toward 5G Heterogeneous Networks

Millimeter-wave (mmw) frequency bands, especially 60 GHz unlicensed band, are considered as a promising solution for gigabit short range wireless communication systems. IEEE standard 802.11ad, also known as WiGig, is standardized for the usage of the 60 GHz unlicensed band for wireless local area networks (WLANs). By using this mmw WLAN, multi-Gbps rate can be achieved to support bandwidth-intensive multimedia applications. Exhaustive search along with beamforming (BF) is usually used to overcome 60 GHz channel propagation loss and accomplish data transmissions in such mmw WLANs. Because of its short range transmission with a high susceptibility to path blocking, multiple number of mmw access points (APs) should be used to fully cover a typical target environment for future high capacity multi-Gbps WLANs. Therefore, coordination among mmw APs is highly needed to overcome packet collisions resulting from un-coordinated exhaustive search BF and to increase the total capacity of mmw WLANs. In this paper, we firstly give the current status of mmw WLANs with our developed WiGig AP prototype. Then, we highlight the great need for coordinated transmissions among mmw APs as a key enabler for future high capacity mmw WLANs. Two different types of coordinated mmw WLAN architecture are introduced. One is the distributed antenna type architecture to realize centralized coordination, while the other is an autonomous coordination with the assistance of legacy Wi-Fi signaling. Moreover, two heterogeneous network (HetNet) architectures are also introduced to efficiently extend the coordinated mmw WLANs to be used for future 5th Generation (5G) cellular networks.Comment: 18 pages, 24 figures, accepted, invited paper

Concept and design of the hybrid distributed embedded systems testbed

Wireless mesh networks are an emerging and versatile communication technology. The most common application of these networks is to provide access of any number of users to the world wide Internet. They can be set up by Internet service providers or even individuals joined in communities. Due to the wireless medium that is shared by all participants, effects like short-time fading, or the multi-hop property of the network topology many issues are still in the focus of research. Testbeds are a powerful tool to study wireless mesh networks as close as possible to real world application scenarios. In this technical report we describe the design, architecture, and implementation of our work-in-progress wireless testbed at Freie Universität Berlin consisting of 100 mesh routers that span multiple buildings. The testbed is hybrid as it combines wireless mesh network routers with a wireless sensor network

A Fully-Integrated Quad-Band GSM/GPRS CMOS Power Amplifier

Concentric distributed active transformers (DAT) are used to implement a fully-integrated quad-band power amplifier (PA) in a standard 130 nm CMOS process. The DAT enables the power amplifier to integrate the input and output matching networks on the same silicon die. The PA integrates on-chip closed-loop power control and operates under supply voltages from 2.9 V to 5.5 V in a standard micro-lead-frame package. It shows no oscillations, degradation, or failures for over 2000 hours of operation with a supply of 6 V at 135° under a VSWR of 15:1 at all phase angles and has also been tested for more than 2 million device-hours (with ongoing reliability monitoring) without a single failure under nominal operation conditions. It produces up to +35 dBm of RF power with power-added efficiency of 51%

Millimeter-wave Communication and Radar Sensing — Opportunities, Challenges, and Solutions

With the development of communication and radar sensing technology, people are able to seek for a more convenient life and better experiences. The fifth generation (5G) mobile network provides high speed communication and internet services with a data rate up to several gigabit per second (Gbps). In addition, 5G offers great opportunities of emerging applications, for example, manufacture automation with the help of precise wireless sensing. For future communication and sensing systems, increasing capacity and accuracy is desired, which can be realized at millimeter-wave spectrum from 30 GHz to 300 GHz with several tens of GHz available bandwidth. Wavelength reduces at higher frequency, this implies more compact transceivers and antennas, and high sensing accuracy and imaging resolution. Challenges arise with these application opportunities when it comes to realizing prototype or demonstrators in practice. This thesis proposes some of the solutions addressing such challenges in a laboratory environment.High data rate millimeter-wave transmission experiments have been demonstrated with the help of advanced instrumentations. These demonstrations show the potential of transceiver chipsets. On the other hand, the real-time communication demonstrations are limited to either low modulation order signals or low symbol rate transmissions. The reason for that is the lack of commercially available high-speed analog-to-digital converters (ADCs); therefore, conventional digital synchronization methods are difficult to implement in real-time systems at very high data rates. In this thesis, two synchronous baseband receivers are proposed with carrier recovery subsystems which only require low-speed ADCs [A][B].Besides synchronization, high-frequency signal generation is also a challenge in millimeter-wave communications. The frequency divider is a critical component of a millimeter-wave frequency synthesizer. Having both wide locking range and high working frequencies is a challenge. In this thesis, a tunable delay gated ring oscillator topology is proposed for dual-mode operation and bandwidth extension [C]. Millimeter-wave radar offers advantages for high accuracy sensing. Traditional millimeter-wave radar with frequency-modulated continuous-wave (FMCW), or continuous-wave (CW), all have their disadvantages. Typically, the FMCW radar cannot share the spectrum with other FMCW radars.\ua0 With limited bandwidth, the number of FMCW radars that could coexist in the same area is limited. CW radars have a limited ambiguous distance of a wavelength. In this thesis, a phase-modulated radar with micrometer accuracy is presented [D]. It is applicable in a multi-radar scenario without occupying more bandwidth, and its ambiguous distance is also much larger than the CW radar. Orthogonal frequency-division multiplexing (OFDM) radar has similar properties. However, its traditional fast calculation method, fast Fourier transform (FFT), limits its measurement accuracy. In this thesis, an accuracy enhancement technique is introduced to increase the measurement accuracy up to the micrometer level [E]

A prototype design of wireless capsule endoscope.

by Chan Yawen.Thesis submitted in: September 12, 2005.Thesis (M.Phil.)--Chinese University of Hong Kong, 2005.Includes bibliographical references (leaves 57-64).Abstracts in English and Chinese.Acknowledgement --- p.iiAbstract --- p.iv摘要 --- p.viiTable of Contents --- p.ixList of Figures --- p.xiiList of Tables --- p.xivChapter Chapter 1 --- Introduction --- p.1Chapter 1.1 --- Diseases of the Gastrointestinal (GI) Tract --- p.1Chapter 1.2 --- Wireless Capsule Endoscopy --- p.2Chapter 1.3 --- Goals of My Research Project --- p.9Chapter Part I - --- Experimental Study to Determine the Frequency of Wireless Transmission --- p.11Chapter Chapter 2 --- Background --- p.11Chapter 2.1 --- Analog and Digital Wireless Video Transmission --- p.11Chapter 2.2 --- "Industrial, Scientific and Medical (ISM) Bands" --- p.11Chapter 2.3 --- Adsorption of RP Energy by Biological Tissue --- p.13Chapter 2.4 --- Frequency used by Implanted/Ingested Devices --- p.13Chapter 2.5 --- Incentives of using Higher Frequencies --- p.14Chapter 2.6 --- Radiation Efficiency from an Implanted/Ingested Source --- p.15Chapter Chapter 3 --- Material and Method --- p.18Chapter 3.1 --- Human Body Trunk Experimental Model --- p.18Chapter 3.2 --- Radiating and Receiving Antennas --- p.19Chapter 3.3 --- Experimental Procedures --- p.21Chapter Chapter 4 --- Results and Discussions --- p.23Chapter Chapter 5 --- Conclusions --- p.30Chapter Part II - --- Prototype Design and Implementation --- p.31Chapter Chapter 6 --- Background --- p.31Chapter 6.1 --- Prototype Overview --- p.31Chapter 6.2 --- Digital and Analog Cameras --- p.32Chapter 6.3 --- Digital and Analog Transmitters --- p.34Chapter Chapter 7 --- Possible Solutions --- p.38Chapter 7.1 --- Analog Camera + Analog Video Transmission --- p.38Chapter 7.2 --- Digital Camera + Analog Video Transmission --- p.38Chapter 7.3 --- Digital Camera + Digital Video Transmission using WLAN Technology --- p.40Chapter 7.4 --- Digital Camera + Digital Video Transmission with Video Compression --- p.42Chapter Chapter 8 --- Implementation of the Analog Camera + Analog Transmission Solution --- p.44Chapter 8.1 --- Circuit Implementation --- p.44Chapter 8.2 --- System Verification --- p.49Chapter 8.3 --- Conclusions --- p.51Chapter Chapter 9 --- Conclusions and Future Work --- p.53Chapter 9.1 --- General Conclusions --- p.53Chapter 9.2 --- Future Work --- p.55List of Abbreviations --- p.6