Results 41 to 50 of about 7,314 (217)
Spectral Efficiency Comparison of OFDM and MC-CDMA with Carrier Frequency Offset [PDF]
Radioengineering, 2017 Inter-carrier interference and multiple access interference due to carrier frequency offset (CFO) are two major factors that deteriorate the performance of orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple ...
J. Ahmed
doaj
Energy‐Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT
International Journal of Satellite Communications and Networking, Volume 43, Issue 2, Page 61-76, March/April 2025.ABSTRACT Direct‐to‐satellite communication for the Internet of Things (IoT) has attracted significant interest from both the scientific community and major telecommunications players. The integration of satellite connectivity in smartphones and IoT devices promises a transformative impact on critical applications such as environmental monitoring, asset
Simon Heine +2 more
wiley +1 more source
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
Sensitivity of OFDM-CDMA systems to carrier frequency offset [PDF]
, 2006 6 pages;This paper presents the impact of a carrier frequency offset on the performance of 2 dimensional spreading OFDM-CDMA systems. This is measured by the degradation of the Signal to Interference plus Noise Ratio (SINR) obtained after despreading and
Des Noes, Mathieu +3 more
core +2 more sources
Adaptive Subchannel Allocation For Mc-Cdma System
, 2007 Multicarrier code-division multiple-access is one of the effective techniques to gain its multiple access capability, robustness against fading, and to mitigate the ISI. In this paper, we propose an improved mulcarrier CDMA system with adaptive subchannel allocation.
Cuiran Li, Jianli Xie, Chengshu Li 0001
openaire +2 more sources
Adaptive TORC detection for MC-CDMA wireless systems
IEEE Transactions on Communications, 2009 Multi carrier code-division multiple access (MC-CDMA) is considered for beyond third generation wireless systems for its effectiveness in the presence of both multipath fading and interference. This paper analyzes MC-CDMA systems adopting an adaptive detection technique based on threshold orthogonality restoring combining (TORC).
Barbara M. Masini, Andrea Conti 0001
openaire +3 more sources
Impact of Ionospheric Scintillations on GNSS Availability and Precise Positioning
Space Weather, Volume 23, Issue 2, February 2025.Abstract For many applications where accuracy, availability, and integrity are essential, such as geodetic positioning and civil aviation, Global Navigation Satellite Systems (GNSS) are indispensable. However, GNSS signal dependability is severely hampered by ionospheric disturbances, especially equatorial plasma bubbles (EPBs), particularly in ...
C. R. Aguiar +2 more
wiley +1 more source
Generalized orthogonal transmission system and its efficient implementation method
Tongxin xuebao, 2002 Based on subband transformation theory, a general model for orthogonal transmultiplexers is constructed. Besides several popular multiuser communication applications such as TDMA, FDMA and CDMA, it can also describe multi-carrier systems such as OFDM and
ZHANG Deng-yin, ZHENG Bao-yu
doaj +2 more sources
NORM Technique based PAPR Reduction in MC-CDMA Systems
Journal of ICT Research and Applications, 2015 Multicarrier code division multiple access (MC-CDMA) is one of the promising technologies for future-generation wireless networks. It offers high data rates, protection against frequency-selective fading and efficient utilization of the spectrum.
Noor Mohammed Vali Mohamad +5 more
doaj +1 more source
DDMA Signal Separation Method Based on Frame‐Interleaved Binary Mask
Electronics Letters, Volume 61, Issue 1, January/December 2025.To solve the problem of multi‐target separation failure at the same distance in empty‐band Doppler division multiple access system, we propose the frame‐interleaved binary mask method. This method can effectively separate multiple targets in above scenario. ABSTRACT Millimetre‐wave multiple‐input multiple‐output (MIMO) radar has many advantages such as
Lu Qian +3 more
wiley +1 more source