Optimizing performance of multiple access multi carrier multilevel frequency shift keying systems

... Multi- carrier Multilevel Frequency Shift Keying (MC-MFSK) system is a form of multi- tone MFSK systems, and it transmits on multiple frequency carriers simultaneously The number of frequency- carriers ... OPTIMIZING PERFORMANCE OF MULTIPLE ACCESS MULTI- CARRIER MULTILEVEL FREQUENCY SHIFT KEYING SYSTEMS TAY HAN SIONG (B.Eng.(Hons.), NUS) A THESIS S...

Ngày tải lên: 27/11/2015, 12:32

... Niranjayan, A Nallanathan and B Kannan, Modeling of Multiple Access Interference and BER Derivation for TH and DS UWB Multiple Access Systems , IEEE Transactions on Wireless communications, Aug ... Schemes”, Proc of Joint UWBST and IWUWBS 2004, May 2004 [3] S Niranjayan, A Nallanathan and B Kannan, A New Analytical Method for Exact Bit Error Rate Computa...

Ngày tải lên: 05/10/2015, 22:04

... arbitrary magnitude clipping function for achieving more realistic results for practical uses Appendix A Proof of the EVM computation equation We define the energy of the clipped portion of the ... distortion due to clipping as long as it is negligible relative to the channel noise EVM computation In this section we present the main result Let f(|xn|) = f (r) be...

Ngày tải lên: 21/06/2014, 01:20

... Error performance for the best- relay selection scheme over Rayleigh fading channels Figure 3: Outage performance for path the best- relay selection scheme over Rayleigh fading channels of the ... 25 30 Regular cooperative networks The best- relay selection scheme Figure 4: Comparison between the regular cooperative diversity and the best- relay sele...

Ngày tải lên: 21/06/2014, 22:20

... System-Level Performance of Antenna Arrays the downlink, the impact of intercell interference on overall system performance plays an important role in CDMAbased systems [5, 7] Thus, detailed investigations ... beamwidths of about 40◦ the optimum performance of omnidirectional antennas is achieved The importance of adopting sector antennas in circular antenna array...

Ngày tải lên: 23/06/2014, 01:20

... Rayleigh, and Proakis B channels, respectively, and the conclusion is stated at the last section THE DESIGN OF MULTILEVEL TURBO ENCODER USING CPFSK M-ary continuous phase frequency shift keying ... binary turbo encoder at every level of the multilevel turbo encoder, and there is a continuousphase encoder serially connected to the turbo encoder at the last level Based...

Ngày tải lên: 21/06/2014, 23:20

... June–July 2003 Cross-Layer Design of an Energy-Efficient Cluster Formation Algorithm [19] K Sohrabi, J Gao, V Ailawadhi, and G J Pottie, “Protocols for self-organization of a wireless sensor network,” ... Hawaii, USA, January 2000 [10] W B Heinzelman, A P Chandrakasan, and H Balakrishnan, An application-specific protocol architecture for wireless microsensor networks,”...

Ngày tải lên: 23/06/2014, 00:20

... Polytechnic Institute and State University Blacksburg, Virginia Multi-Carrier Digital Communications: Theory and Applications of OFDM Ahmad R S Bahai and Burton R Saltzberg Principles of Digital Transmission: ... Digital Communications Theory and Applications of OFDM Chapter 1.1 Introduction to Digital Communications Background The physical layer of...

Ngày tải lên: 02/03/2013, 16:58

... performance and thermal characteristics of the system Description of the multi-stage evacuated solar desalination system The Multi-stage evacuated solar desalination system is a combination of ... Results and discussion There are many design and operating parameters which affect the performance characteristics and distillate yield of...

Ngày tải lên: 05/09/2013, 16:11

... Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light- emitting diodes Seokjae Lee†1, Jaryong Koo†1, Gunwoo Hyung†1, Donghwan Lim1, Donghyung ... the other devices due to a relatively narrow emissive region Conclusions In conclusion, the present study reports on the high efficiency blue PHOLEDs based...

Ngày tải lên: 20/06/2014, 23:20

... investigated the performance of concatenated BCH-LDGM codes for iterative data fusion of distributed decisions over the Gaussian MAC The use of LDGM codes permits to efficiently exploit the intrinsic ... step further by analyzing the performance of concatenated BCH-LDGM codes for encoded data fusion over the Gaussian MAC Specifically, our contributio...

Ngày tải lên: 21/06/2014, 07:20

... following contributions (1) After reviewing related work in Section 2, we formalize the notion of partial interference in Section and then demonstrate its significant performance impact on different ... expansion of the stability region by considering partial interference instead of binary ones as in Section More importantly, one should note the 16 EURASIP Journal on Wirele...

Ngày tải lên: 21/06/2014, 11:20

... out the NEGF and NEMD calculations HJL participated in the design of the study and discussions of the theoretical results YWW, HYL, and LP participated in the implementation of the LAMMPS and ... method to study the thermoelectric properties of a serial of CNTs with different diameters and chiralities They are the zigzag (7,0), (8,0), (10,0), (11,0), (1...

Ngày tải lên: 21/06/2014, 17:20

... (dB) 2 -PAM 4 -PAM 20 25 0.5 100 30 101 102 103 Number of user, SNR = 15 dB 2PPM 4PPM 8 -PAM 16 -PAM 8PPM 1 6PPM Figure 8: Capacity of a multiple access UWB system with PAM over a multipath fading ... 1 6PPM 3 2PPM 2PPM 4PPM 8PPM Figure 5: Relationship between distance and channel capacity of a UWB system with PPM over a multipath fading channel, L...

Ngày tải lên: 21/06/2014, 22:20

... on SINR for hexagonal multicarrier system channel spread factor on the performance of SINR in hexagonal multicarrier modulation systems are further discussed The exact SINR expression versus insufficient ... and channel spread factor on the performance of SINR in hexagonal multicarrier modulation systems are further discussed The exact SINR ex...

Ngày tải lên: 21/06/2014, 22:20