high data rate wireless channels
STC-Mimo Block Spread OFDM in Frequency Selective AWGN Channels
... of wireless networks, in order to provide an acceptable level of service, the operators find ways to improve the network capacity and throughput in great ...in wireless domain, 60 GHz RF band has a great ...
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Space-Time Coded OFDM for High Data rate Wireless Communication over Wideband Channels
... fading channels and ...fading channels and offer a receiver of novel turbo using demodulator of MAP-EM (maximum a posteriori expectation-maximization) and soft decoder LDPC that will extensively decrease ...
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Low Complexity Turbo Equalization for High Data Rate Wireless Communications
... for high-order modulations and long-delay spread frequency selective ...radio channels have shown the effectiveness of the proposed algorithms in mitigating the intersymbol interference ...
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Performance Analysis of MIMO OFDM System by using LS and MMSE Techniques
... world, high speed is an important factor to be considered in wireless communication ...because high speed is required for access of video, images, and many others multimedia ...achieve high ...
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HIGH DATA RATE WLAN
... faster data rates comparable with 802.11a. The number of channels available, however, is not increased, since channels are a function of bandwidth, not radio signal ...
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A Secure Method for Transmission of Sensitive Data over Wireless Fading Channels
... A novel two-arrange plot that takes into account conquering the mystery blackout marvel for a wide class of channels. The plan depends on sharing a delay tolerant private key, utilizing arbitrary binning, and ...
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Simulation of High Data Rate Transmission over Optical Cable Channels Using OFDM/OQAM Modulation
... grid, high order modulation formats are required, such as 64-QAM or ...very high order modulation could be severely ...achieve high side lobe suppression ratio, even with short FFT ...
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Analysis Parameter of MIMO-OFDM System for IEEE 802.16 Systems
... the data stream is split into N parallel streams of reduced data rate with each of them transmitted on separate ...among channels near each other in frequency ...of wireless ...
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Combined Rate and Power Allocation with Link Scheduling in Wireless Data Packet Relay Networks with Fading Channels
... in wireless networks ...supporting high data rate transmis- sion in 4G systems, where users may be separated from the base station or an access point in a wireless local area net- work ...
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Review Paper on MIMO-OFDM System for WIMAX (IEEE 802.16) based on Cognitive Radio Networks
... the data stream is split into N parallel streams of reduced data rate with each of them transmitted on separate ...among channels near each other in frequency ...of wireless ...
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On Bandwidth Efficient Modulation for High Data Rate Wireless LAN Systems
... these channels, a kind of spectral shap- ing should be applied to the transmitted ...and rate should be optimally distributed over fre- quency components of the transmitted signal by an algo- rithm called ...
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A Noval Approach For Optimization OF PHYSICAL LAYER FOR WIRELESS AND MOBILE COMMUNICATION
... [5] A. Ghosh, T. A. Thomas, M. C. Cudak, R. Ratasuk, P. Moorut, F. W. Vook, T. S. Rappaport, G. MacCartney, S. Sun, and S. Nie, “Millimeter wave enhanced local area systems: A high data rate approach ...
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Performance of OFDM based FSO Communication Systems using M ary PSK Modulation
... In this paper we study the impact of PSK baseband modulation technique that is used for the OFDM signal at the transmitter. We evaluate the M-ary PSK modulation for different values of M, the number of symbols on a ...
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Design of sub THz traveling wave tubes for high data rate long range wireless links
... an electron gun to generate the electron beam, the slow wave structure (SWS) where part of the energy of the electrons is transferred to the signal, the collector to collect the electrons at the end of the SWS, the ...
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An Efficient Fixed Rate Transmission Scheme Over Delay-Constrained Wireless Fading Channels
... in wireless systems ...arrival rate of the data from the upper layer and the departure rate of the data to the physical ...arrived data packets, and a scheduler is in charge of ...
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High data rate optical wireless communication system using millimeter wave and optical phase modulation
... wideband wireless communications. The benefits of optical wireless communications (OWC) primarily lie in two aspects: due to the high carrier frequency, the transmission bandwidth will be potentially ...
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BER Performance Comparison of Combined Modulation with Coded Algorithm for MIMO Technique
... code rate R = X / (X +1) and an M-ary signal mapper that maps M = 2X input points into a larger constellation of M = 2X+1 constellation ...code rate of 2/3that takes a QPSK signal (M=4) and put out an 8- ...
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Review on Generations in Mobile Cellular Technology
... low data rate and insufficient data communication there is a emerging demand of the next generation wireless system that provides high speed data communication as well as voice ...
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Dwt Based Ofdm System for Reliable Ber Performance Using Barcode System in Mobile Devices
... In wireless medium to increase the data rate with high performance orthogonal frequency division multiplexing (OFDM) is used which uses inverse fast fourier transform at the transmitter to ...
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Turbo Equalization Of Nonlinear ISI-channels Using High Rate FEC Codes
... A further simplification of Eq. (5) is to consider only the code word in S j +1 and S −1 j , respectively, closest to the re- ceived sequence r . This eliminates the sums in the numer- ator and denominator of Eq. (5), ...
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