Results 81 to 90 of about 2,223,777 (199)
Pulse Interval Modulation for Ultra-High Speed IR-UWB Communications Systems
EURASIP Journal on Advances in Signal Processing, 2010 This paper analyzes performances of the Pulse Interval Modulation (PIM) scheme for impulse radio ultra-wideband (IR-UWB) communication systems. Due to the PIM anisochronous nature, a tap delay line (TDL) coded division multiple access (CDMA) scheme ...
Herceg Marijan +2 more
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IEEE AccessRecently, visible light communications (VLCs) have attracted attention as a complement to wireless communications by radio frequency. In addition, the demand for Internet of Things (IoT) communications has increased in the last decade, and VLC-based IoT ...
Kyohei Ono +3 more
doaj +1 more source
Turbo-coded CDMA-based two-way relaying
, 2012 In this contribution, we have studied the performance of a Turbo-Coded (TC) Code Division Multiple Access (CDMA) based two-way relaying scheme. More explicitly, we employ a seven-user CDMA model, where two of the CDMA users are communicating with each ...
Liao, Sha Sha, Ng, Soon Xin
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A Unified Approach to the Analysis of Multicarrier DS-CDMA over Nakagami-$M$ Fading Channels
, 2001 A class of unified multicarrier DS-CDMA (MC DS-CDMA) schemes is defined and its performance is considered over multipath Nakagami-$M$ fading channels. The spacing between two adjacent subcarriers of the unified MC DS-CDMA scheme is a variable, allowing ...
Yang, L-L., Hanzo, L.
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International Journal of Information and Communication Technology Research, 2009 In this paper, we introduce two techniques, recently proposed in (1-2], for combination of coding and spread spectrum modulation in wideband Code Division Multiple Access (CDMA) systems.
Masoumeh Nasiri Kenari
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Simulation and Noise Analysis of Multimedia Transmission in Optical CDMA Computer Networks
Journal of ICT Research and Applications, 2013 This paper simulates and analyzes noise of multimedia transmission in a flexible optical code division multiple access (OCDMA) computer network with different quality of service (QoS) requirements.
Nasaruddin Nasaruddin, Tetsuo Tsujioka
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Performance of Broadband Multicarrier DS-CDMA using Space-Time Spreading-Assisted Transmit Diversity
, 2005 In this contribution multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) using space–time spreading (STS)-assisted transmit diversity is investigated in the context of broadband communications over frequency-selective Rayleigh-fading ...
Yang, L-L., Hanzo, L.
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, 2005 —In multicarrier code-division multiple-access (MCCDMA), the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency.
Yang, L-L., Hanzo, L.
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IEEE AccessThis paper experimentally validates a near-far-resilient asynchronous uplink multiple access (MA) scheme for underwater optical wireless vehicle networks (UOWVNs) based on code division multiple access (CDMA).
Ekkaphol Khansalee +2 more
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Analysis of signal detection rates in Optical CDMA
IEICE Electronics Express, 2005 The estimation of OCDMA system performance under the condition of code phase alignment between received and locally generated code signals is demonstrated in dual homodyne correlation receiver using balanced detector. Based on the analysis of auto correlation property for prime codes, distinctive compared to the conventional CDMA codes, the developed ...
openaire +1 more source