Optimizing performance of multiple access multi carrier mult

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

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Exact modeling of multiple access interference, ber derivation and a method to improve the performance of UWB communication systems

... 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

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Báo cáo hóa học: " On the EVM computation of arbitrary clipped multi-carrier signals" docx

... 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

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Báo cáo hóa học: " Research Article Performance of Multiple-Relay Cooperative Diversity Systems with Best Relay Selection over Rayleigh Fading Channels" pdf

... 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

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Báo cáo hóa học: "System-Level Performance of Antenna Arrays in CDMA-Based Cellular Mobile Radio Systems Andreas Czylwik" pptx

... 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

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Báo cáo hóa học: " Research Article Joint Multilevel Turbo Equalization and Continuous Phase Frequency Shift Keying" pot

... 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

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Báo cáo hóa học: " Cross-Layer Design of an Energy-Efﬁcient Cluster Formation Algorithm with Carrier-Sensing Multiple Access for Wireless Sensor Networks" pdf

... 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

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Multi-Carrier Digital Communications - Theory and Applications of OFDM

... 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

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Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis

... 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

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Báo cáo hóa học: " Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light emitting diodes" potx

... 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

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Báo cáo hóa học: " Research Article Iterative Fusion of Distributed Decisions over the Gaussian Multiple-Access Channel Using Concatenated BCH-LDGM Codes" potx

... 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

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Báo cáo hóa học: " Research Article Partial Interference and Its Performance Impact on Wireless Multiple Access Networks" potx

... 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

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báo cáo hóa học:" Optimizing the thermoelectric performance of zigzag and chiral carbon nanotubes" pdf

... 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

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Báo cáo hóa học: " Research Article Capacity of Time-Hopping PPM and PAM UWB Multiple Access Communications over Indoor Fading Channels" ppt

... (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

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Báo cáo hóa học: " Research Article Effects of Carrier Frequency Offset, Timing Offset, and Channel Spread Factor on the Performance of Hexagonal Multicarrier Modulation Systems" doc

... 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

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