Results 91 to 100 of about 2,226 (173)

CCE-OMBOC: A Simple and Efficient Constant-Envelope Technology for Multicarrier Navigation Modulation by Clipping

Remote Sensing
Multicarrier navigation modulation is a trend within next-generation global navigation satellite systems (GNSS) aiming to enhance navigation performance, but it forces amplifiers to work in nonsaturation zones, resulting in low power efficiency.
Lingyu Deng, Yikang Yang, Xingyou Qian, Jiangang Ma, Yanxiang Feng, Hengnian Li   +5 more
doaj   +1 more source

Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes

, 2011
In this contribution we jointly optimize the number of multiple-input multiple-output (MIMO) layers and the number of bits per symbol within an iteratively-detected multiuser MIMO downlink (DL) transmission scheme under the constraint of a given fixed ...
Ahrens, Andreas, Benavente Peces, César
core  

Partial Equalization for MC–CDMA Systems in Non-Ideally Estimated Correlated Fading

, 2010
Multicarrier code-division multiple access (MC–CDMA) can support high data rates in next-generation multiuser wireless communication systems. Partial equalization (PE) is a low-complexity technique for combining the signals of subcarriers to improve the ...
Conti, Andrea, Flavio Zabini, Zabini, Flavio, Andrea Conti, B. M. Masini, Masini, Barbara M, L. Hanzo, F. Zabini, Hanzo, Lajos, Barbara M. Masini, Lajos Hanzo   +10 more
core   +1 more source

Coherent multicarrier techniques in future broadband communication networks

, 2022
S.79-87A multicarrier arrangement imposes certain requirements on the coherence of each laser wave in particular if a densely spaced (several GHz) carrier comb is assumed.
Baack, C., Heydt, G., Bachus, E.-J.
core  

An industrial Internet-of-things URLLC system via cross-layer design for anti-jamming

Dianxin kexue
The classical OFDM multicarrier waveforms for transmission are adopted by the existing 5G/B5G URLLC standard (3GPP R17-18), and less attention is paid to the anti-interference strategy of URLLC-OFDM multicarrier transmission due to its operation in the ...
WANG Xiang, ZHAO Peiyi, ZENG Qi, ZHONG Jun, ZHANG Xing, SU Jingru   +5 more
doaj  

Optimum Mode-Switching-Assisted Constant-Power Single- and Multicarrier Adaptive Modulation

, 2003
A set of optimum mode-switching levels is derived for a generic constant-power adaptive-modulation scheme based on a closed-form expression of the average bit error ratio (BER) and the average bits-per-symbol (BPS) throughput of the adaptive-modulation ...
Choi, B.J., Hanzo, L.
core  

SVD-Aided, Iteratively Detected Spatial Division Multiplexing Using Long-Range Channel Prediction

, 2007
In this contribution iteratively detected spatial division multiplexing is investigated under the constraint of a fixed data throughput. Existing bit loading and transmit power allocation techniques are often optimized for maintaining both a fixed ...
Ng, S.X., Liu, W., Kuehn, V., Ahrens, A., Yang, L-L., Hanzo, L.   +5 more
core  

Passive Backscatter Communication Scheme for OFDM-IM with Dynamic Carrier Activation. [PDF]

Sensors (Basel), 2023
Li S, Lu R.
europepmc   +1 more source

CDMA Transmission with Complex OFDM/OQAM

EURASIP Journal on Wireless Communications and Networking, 2008
We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Lélé Chrislin, Siohan Pierre, Legouable Rodolphe, Bellanger Maurice   +3 more
doaj  

Adaptive Modulation Techniques for Duplex OFDM Transmission

, 2000
The design tradeoffs of turbo-coded burst-by-burst adaptive orthogonal frequency division multiplex (OFDM) wide-band transceivers are analyzed. We demonstrate that upon aiming for a higher throughput a higher proportion of low-quality OFDM subcarriers ...
Keller, T., Hanzo, L.
core