Phy layer and mac layer protocol design and performance analysis for opportunistic spectrum access in cognitive radio networks

... both physical (PHY) layer and medium access control (MAC) layer In this thesis, we focus on cognitive radio networks (CRN) and aim to improve the spectrum sensing performance at the PHY layer and ... Sensing Strategies for Cognitive Radio Mesh Networks Chapter Cooperative Spectrum Sensing Strategies for Cognitive Radio Mesh Networks In this chap...

Ngày tải lên: 10/09/2015, 15:53

... the design of cognitive radio MAC is no longer an independent task for MAC layer, the researchers have been learning and investigating the approach on joint design of spectrum sensing and MAC ... spectrum sensing and cognitive radio MAC protocols The fundamentals of various spectrum sensing methods and cognitive radio MAC protocols are descr...

Ngày tải lên: 10/09/2015, 08:28

... SOME FUNDAMENTAL ISSUES IN RECEIVER DESIGN AND PERFORMANCE ANALYSIS FOR WIRELESS COMMUNICATION WU MINGWEI (B.Eng, M.Eng., National University of Singapore) A THESIS SUBMITTED FOR THE ... Just like in any communication, two fundamental research issues in wireless communication are receiver design and performance analysis The objective of receiv...

Ngày tải lên: 10/09/2015, 15:51

... Joint cooperative relay scheme for spectrum-efficient usage and capacity improvement in cognitive radio networks Qixun Zhang∗ , Zhiyong Feng and Ping Zhang Wireless Technology Innovation Institute ... which is divided into two time slots t0i and tij for receiving and transmitting on two relay links in Figure 2, where rji = αji (0 < αji < 1) denotes the DyTSA...

Ngày tải lên: 21/06/2014, 17:20

... Abstract Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks In a cognitive radio network (CRN), bands of a spectrum are shared by licensed (primary) and ... Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks by Chittabrata Ghosh B.Tech (Kalyani Univer...

Ngày tải lên: 30/10/2014, 20:09

... opportunities for the realization of cost-effective practical indoor location tracking systems 1.2 Overview of Existing Indoor Location Tracking Systems In this chapter, we classify the practical indoor tracking ... propagation before and after fusion for Trial 92 6.5 Tracking paths before and after fusion for Trial 93 xii LIST OF FIGURES 6.6 Temporal error pro...

Ngày tải lên: 10/09/2015, 08:24

... message on the performance of opportunistic network coding scheme We then use the findings for further study of network coding scheme on large scale wireless ad- hoc networks We find out there is an ... mobile ad- hoc networks In this thesis we propose to first study and investigate the performance behavior and key control parameters of opportunistic...

Ngày tải lên: 16/10/2015, 11:59

... Underwater MAC Protocols We first focus on the existing underwater handshaking- based MAC protocols; then, we shall briefly describe some proposals for non -handshaking protocols Handshaking- based MAC protocols ... benchmarking protocol for more advanced underwater handshaking- based MAC protocols We aim to enhance channel utilization of handshaking- base...

Ngày tải lên: 09/09/2015, 18:49

... crop season Sunflower was grown in the Autumn and compared to the financial benefit of maize in Di Linh district, Lam Dong province Crop Table 27 Economic analysis of sunflower, maize, in Autumn ... Study of the financial return of sunflower compared to maize and cotton in the South Central Coast of Viet Nam 2.3.1 Vegetative growth and development of sunf...

Ngày tải lên: 22/06/2014, 13:20

... the performance of the CPIC receiver, and we can see that the APIC outperforms the CPIC for μ ∈ (0, 0.5) Under the same simulation settings, the BER performances of the one- and two-stage APIC receiver ... this paper, we designed an adaptive receiver for the multicarrier DS-CDMA system over Rayleigh fading channels and evaluated the performance of the system A c...

Ngày tải lên: 22/06/2014, 19:20

... DESIGN AND PERFORMANCE ANALYSIS OF EFFICIENT WIRELESS SYSTEMS WANG PEIJIE (M.Sc., National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... communication systems and discuss issues on performance analysis Then, we focus on summarizing the current results on the receiver design and performance analysis...

Ngày tải lên: 10/09/2015, 08:25

... Overview of Receivers for Fading Channels 1.2 Review of Quadratic- Form Receivers and Related Topics 1.2.1 Quadratic- Form Receivers 1.2.2 Quadratic Receiver and ... the design and performance analysis of QFRs In the following, a literature review of QFRs and some related topics will be given 1.2 Review of Quadratic- Form Receivers and Rela...

Ngày tải lên: 14/09/2015, 11:19

... MIMO Systems and Space- Time Coding 1.1.1 Background of MIMO Systems 1.1.2 Introduction to Space- Time Coding Space- Time Block Codes over General Fading ... DESIGN AND PERFORMANCE ANALYSIS OF MIMO SPACE- TIME BLOCK CODING SYSTEMS OVER GENERAL FADING CHANNELS HE JUN (B Eng., Zhejiang University, P.R.China) A THESIS SUBMITTED FOR...

Ngày tải lên: 14/09/2015, 14:05

... returning to clinic in the conflict weeks after the election ▪ The second difficulty, that continued beyond the immediate crisis, was lack of money No one had transport money and getting to the clinic ... comparing the information reported in the interview dialogue with clinic information recorded by the AMPATH care system about the services provided by indivi...

Ngày tải lên: 25/10/2012, 10:31