Results 81 to 90 of about 6,805,792 (197)
A minimum approximate-BER beamforming approach for PSK modulated wireless systems
, 2008 A beamforming algorithm is introduced based on the general objective function that approximates the bit error rate for the wireless systems with binary phase shift keying and quadrature phase shift keying modulation schemes.
Hong, Xia +3 more
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, 2007 This contribution proposes a minimum bit error rate (MBER) decision feedback equaliser (DFE) designed for single-input multiple-output (SIMO) systems employing a quadrature phase shift keying (QPSK) modulation scheme. It is shown that this MBER design is
Shi, Y. +3 more
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, 2008 —We consider beamforming assisted detection for multiple antenna aided multiuser systems that employ the bandwidth efficient quadrature amplitude modulation scheme.
Chen, Sheng +3 more
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Design and Implementation of a Chaotic Scheme in Additive White Gaussian Noise Channel
Journal of Computer Networks and Communications, 2016 A new chaotic scheme named Flipped Chaotic On-Off Keying (FCOOK) is proposed for binary transmission. In FCOOK, the low correlation value between the stationary signal and its mirrored version is utilized.
Nizar Al Bassam, Oday Jerew
doaj +1 more source
, 2007 —An asynchronous binary DS-CDMA system using random spreading sequences is considered when communicating over various fading channels. New closed-form expressions are derived for the conditional Characteristic Function (CF) of the multiple access ...
Liu, Xiang, Hanzo, Lajos
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, 2005 Adaptive training of neural networks is typically done using some stochastic gradient algorithm that tries to minimize the mean square error (MSE). For many applications, such as channel equalization and code-division multiple-access (CDMA) multiuser ...
Hanzo, L., Chen, S., Samingan, A.K.
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Tongxin xuebao, 2017 Based on the equivalent genie-aided system,the bit-error rate of the block Markov superposition transmission system was analyzed and the union bound of the bit-error rate of the genie-aided system was derived.When the bit-error rate was extremely low at ...
Jin-shun ZHU, Xiao MA
doaj +2 more sources
PERFORMANCE EVALUATION OF TURBO CODE ENDCODING AND DECODING
Al-Qadisiyah Journal for Engineering Science, 2011 Channel coding is very important for secure communication. The most widely used communication coding is turbo coding technique, which is very secure technique. We deal in this paper with turbo code which is new class of convolutional codes.
Yahya Jasim Harbi
doaj
Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA
EURASIP Journal on Wireless Communications and Networking, 2005 A hybrid pulse interval modulation code-division multiple-access (hPIM-CDMA) scheme employing the strict optical orthogonal code (SOCC) with unity and auto- and cross-correlation constraints for indoor optical wireless communications is proposed. In this
Ghassemlooy Z., See C. K.
doaj +1 more source
, 2007 Quadrature Amplitude Modulation (QAM) is a bandwidth-efficient transmission technique. The exact average Bit Error Ratio (BER) of the maximum-minimum-distance rectangular QAM (R-QAM) constellation is studied in the context of asynchronous Co-Channel ...
Liu, X., Hanzo, L.
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