Results 31 to 40 of about 242 (110)
A Spread Spectrum Sequence for MC-CDMA System
Dianxin kexue, 2015 The MC-CDMA system takes the advantages of the OFDM system and the CDMA system.The MC-CDMA system is a kind of wireless communication aroused an ongoing and growing research interests,which has the characteristics of high bit transmission rate,high ...
Zhicheng Zhang, Xiaona Huang, Li Xiong
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Timing estimator for MC-CDMA system
Electronics Letters, 2002 A new method, using training sequences to correct the block timing offset of the MC-CDMA system in a time-varying multipath channel with frequency offset, is proposed. This new method is compared with the Schmidl and Cox method (see IEEE Trans. Commun., vol.45, no.12, p.1613-21, 1997) in terms of estimator mean and variance, it being found that the new
Luan Yingzi, Li Jiandong, Yang Jiawei
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Advanced Materials Technologies, Volume 10, Issue 5, March 4, 2025.This paper reviews the state‐of‐the‐art and recent advances in bio‐integrated wireless power and data transfer technologies for flexible bionics, wearable and implantable bioelectronics. The architectures, operating principles, materials, and application technologies are presented in detail.
Massimo Mariello, Christopher M. Proctor
wiley +1 more source
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
Efficient Complex Sphere Decoding for MC-CDMA Systems [PDF]
IEEE Transactions on Wireless Communications, 2006 Maximum likelihood (ML) joint detection of multi-carrier code division multiple access (MC-CDMA) systems can be efficiently implemented with a sphere decoding (SD) algorithm. In this paper, we examine the application of complex instead of real SD to detect MC-CDMA, which solves many problems in a more elegant manner and extends SD adaptability to any ...
Santiago-Mozos, Ricardo +1 more
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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
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EURASIP Journal on Advances in Signal Processing, 2005 Multicarrier CDMA (MC-CDMA) has become a promising candidate for future wireless multimedia communications for its robustness to frequency-selective fading and its flexibility for handling multiple data rates.
Ibars Christian +2 more
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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
Crest-factor study of MC-CDMA and OFDM [PDF]
Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324), 1999 The crest-factor (CF) of M-ary PSK MC-CDMA systems is shown to be dependent upon the aperiodic cross-correlations as well as on the aperiodic autocorrelations of the spreading codes used. Based on this observation, the crest-factor distributions of BPSK MC-CDMA using two different binary orthogonal spreading sequences namely Walsh codes and orthogonal ...
Choi, B.J., Kuan, E.L., Hanzo, L.
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International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Accurate path loss prediction is vital for 5G deployment, especially at midband frequencies where signal degradation is significant. This paper presents a hybrid model that integrates an optimized COST‐231 Hata model with a random forest algorithm to improve prediction accuracy at 3.5 GHz.
Farouq E. Shaibu +6 more
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