Multiple Access Techniques for Wireless Communications ppsx

... 44 2.5.3 Wireless Local Area Network (WLAN) Standards 46 2.6 Summary 48 3 Multiple Access in Cellular Communication Systems 49 3.1 Multiple Access and the OSI Layers 49 3.2 Basic Multiple Access ... individual portions of its resources to support multiple communications, basic multiple access techniques (such as frequency-, time-, or code-division multiple access, wi...

Ngày tải lên: 02/03/2013, 16:59

... Journal on Wireless Communications and Networking Volume 2007, Article ID 64238, 8 pages doi:10.1155/2007/64238 Research Article An Adaptive Time-Spread Multiple- Access Policy for Wireless Sensor ... transmission u → v (therefore, these nodes belong in S v ∪{v}−{u})in time slot i for which i/ ∈ Ω χ (therefore, these nodes belong in O c i,u →v ) and for which nodes the most rec...

Ngày tải lên: 22/06/2014, 19:20

... PRMA Performance 322 8.4 Combining Backlog-based and Load-based Access Control 323 8.4.1 Accounting for Multiple Access Interference 323 8.4.2 Performance of Combined Load- and Backlog-based Access Control ... numbers 1 INTRODUCTION This book focuses on issues related to multiple access for cellular mobile communications, with a specific interest in access arbitration throu...

Ngày tải lên: 27/06/2014, 15:20

... capacity for data transmission of current wireless systems is still tiny when compared to wired forms of communications. But wireless data rates continue to increase. To understand the push for higher ... interesting trends in wireless communications is the proposed use of multiple- input, multiple- output (MIMO) systems. A MIMO system uses multiple transmitter antennas and...

Ngày tải lên: 20/11/2012, 11:36

... ground fixed/mobile platform, and (3) the space platform. 4 RF MEMS Circuit Design for Wireless Communications Information  Voice  Broadband data  Messaging  Navigation  DBS  Internet  Video Wireless ... 4 1 3 3 p (2.29) 28 RF MEMS Circuit Design for Wireless Communications 2 Elements of RF Circuit Design 2.1 Introduction The design of RF MEMS circuits for wireless ap...

Ngày tải lên: 19/01/2014, 20:20

... desirable. In the literature, channel modeling information can be found for • wireless (radio) communications [Tur72, Suz77], • wireline communications (twisted pair) [Fis95], 4 INTRODUCTION ... the book will be wireless communications exam- ples, specifically radio communications such as cellular communications. In such systems, there are several standard models used fo...

Ngày tải lên: 16/03/2014, 22:20

... observed in the utilized multiple- access schemes: from frequency-division multiple access (FDMA) to time-division multiple access (TDMA) and code-division multiple access (CDMA). TDMA and CDMA developments ... aspects of wireless communications performance. Chapters 7 and 8 discuss the basis of two public mobile communication standards, and several private wireless 8 TDD...

Ngày tải lên: 27/05/2014, 04:01

... centered around multiple- input multiple- output (MIMO) techniques for wireless communications is based on capacity gains obtained by more fully exploiting the spatial and temporal aspects of wireless ... Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007, Article ID 24595, 2 pages doi:10.1155/2007/24595 Editorial Space-Time Channel Modeling for...

Ngày tải lên: 21/06/2014, 22:20

... papers are categor ized into 3 categories: Optimization Techniques for Resource Allocation in Wireless Systems, Optimization Techniques for Beamforming and ... the EURASIP Journal on Wireless Communications and Networking (JWCN). This issue collects several research results on the use of optimiza- tion techniques in wireless communications. Recent adv- ances ... problems i...

Ngày tải lên: 21/06/2014, 22:20

... environment,” Wireless Communications and Mo- bile Computing, vol. 5, no. 5, pp. 503–512, 2005, special issue on Ultrawideband for Wireless Communications. [17] T. S. Rappaport, Wireless Communications: ... located for future dense wireless local communications, particularly as relates to large wireless LAN bridges, and wireless high-quality video-conferencing. To establ...

Ngày tải lên: 22/06/2014, 22:20