Results 71 to 80 of about 7,178 (195)
Crest Factor Reduction in MC-CDMA Employing Carrier Interferometry Codes
EURASIP Journal on Wireless Communications and Networking, 2004 This paper addresses signal compactness issues in MC-CDMA employing carrier interferometry codes using the measure of crest factor (CF). Carrier interferometry codes, applied to N -carrier MC-CDMA systems, enable 2N users to simultaneously share the
Natarajan Balasubramaniam +1 more
doaj +2 more sources
, 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.
Hanzo, L., Yang, L-L.
core
Advanced Functional Materials, Volume 34, Issue 38, September 18, 2024.A composite co‐assembled dehydropeptide‐based gel is designed for the orthogonal triggered release of doxorubicin and methotrexate. The incorporation of mesoporous silica‐coated gold nanorods and magnetic liposomes within the gel allows for the combined effects of sequential drug release through photothermia and magnetic hyperthermia, resulting in ...
Sérgio R. S. Veloso +13 more
wiley +1 more source
MAP Channel-Estimation-Based PIC Receiver for Downlink MC-CDMA Systems
EURASIP Journal on Wireless Communications and Networking, 2008 We propose a joint MAP channel estimation and data detection technique based on the expectation maximization (EM) method with paralel interference cancelation (PIC) for downlink multicarrier (MC) code division multiple access (CDMA) systems in the ...
Panayırcı Erdal +3 more
doaj +2 more sources
A Tight Bound for Probability of Error for Quantum Counting Based Multiuser Detection
, 2002 Future wired and wireless communication systems will employ pure or combined Code Division Multiple Access (CDMA) technique, such as in the European 3G mobile UMTS or Power Line Telecommunication system, but also several 4G proposal includes e.g.
Balazs, Ferenc, Imre, Sandor
core +2 more sources
Investigating the relation between optimum guard interval and channel delay spread for a MC-CDMA system [PDF]
, 2012 This paper demonstrates a novel approach to determining the optimum guard interval for a multicarrier code division multiple access (MC-CDMA) system. Analytical expressions for useful and interference power are derived as a basis for comparison.
Gokalp, H, Kurnaz, C
core +1 more source
Data collection in IoT networks: Architecture, solutions, protocols and challenges
IET Wireless Sensor Systems, Volume 14, Issue 4, Page 85-110, August 2024.Current IoT data collection techniques are categorised and a comparative evaluation of these methods is performed based on the topics analysed and elaborated by the authors. In addition, a comprehensive analysis of recent advances in IoT data collection is provided, highlighting different data types and sources, transmission protocols from connected ...
Ado Adamou Abba Ari +6 more
wiley +1 more source
Downlink Steered Space-Time Spreading Assisted Generalised Multicarrier DS-CDMA Using Sphere-Packing-Aided Multilevel Coding [PDF]
, 2007 This paper presents a novel generalised Multi-Carrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink, as well as employing multi-dimensional Sphere ...
El-Hajjar, M +4 more
core +1 more source
Sequence optimisation for compressed sensing CDMA MIMO radar via mutual coherence minimisation
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1178-1192, July 2024.The authors focus on optimising waveforms for CDMA‐MIMO radar systems, particularly for Compressed Sensing (CS) based target estimation. The study introduces an optimisation framework to modify phase components of code sequences, aiming to minimise off‐diagonal elements in the Gramian matrix of the sensing matrix.
Saravanan Nagesh +4 more
wiley +1 more source
BER Degradation of MC-CDMA at High SNR with MMSE Equalization and Residual Frequency Offset
EURASIP Journal on Wireless Communications and Networking, 2009 Multicarrier Code Division Multiple Access (MC-CDMA) is an attractive technique for high speed wireless data transmission in view of its advantages over orthogonal frequency division multiplexing. In this paper, we analyze the performance of fully loaded
P. Harinath Reddy, V. U. Reddy
doaj +2 more sources