Zobrazeno 1 - 10
of 10 942
pro vyhledávání: '"qam"'
Publikováno v:
Radioengineering, Vol 33, Iss 1, Pp 195-203 (2024)
Weak target detection is a great challenging in radar field. To detect weak targets via radar communication integrated signal, a method for constructed step-LFM (CStep-LFM) signal is proposed based on quadrature amplitude modulation-orthogonal freque
Externí odkaz:
https://doaj.org/article/5304f420dc8d405194b52262b403f929
Publikováno v:
Guangtongxin yanjiu, Pp 23010301-23010308 (2024)
【Objective】The commonly used max-log-map algorithm reduces the complexity of soft information computation compared to the log-map algorithm. However, it still consumes significant resources for high-order Orthogonal Amplitude Modulation (QAM), su
Externí odkaz:
https://doaj.org/article/3ff7ee8dca834f9cb3d455c28f52372d
Autor:
Mohammed G. Al-Hamiri, Haider J. Abd
Publikováno v:
Results in Optics, Vol 16, Iss , Pp 100675- (2024)
Light fidelity (LiFi) is one of the most promising areas within wireless optical communication system. It provides many benefits, including high capacity, improved security and enhanced cost-effectiveness. However, there is still challenges which are
Externí odkaz:
https://doaj.org/article/b8dac36be1784a8593d3884e0d86cf61
Autor:
Hasan k. Al Deen, Haider J. Abd
Publikováno v:
Journal of Telecommunications and Information Technology, Vol 2, Iss 2 (2024)
Rapid development of 5G networks encourages researchers to improve the radio-over-fiber (RoF) technique in order to reach 10 Gbps data transmission rates, to increase bandwidth and range, while reducing latency and implementation cost. This paper eva
Externí odkaz:
https://doaj.org/article/51ee8ac0ae384334a940cb94b7e47453
Publikováno v:
IEEE Access, Vol 12, Pp 147537-147551 (2024)
Polar codes are one of the most powerful types of forward error correction codes. These codes are now adopted in the 5G standard for control channels and are the primary contender for future communication systems. In this paper, a new data transmissi
Externí odkaz:
https://doaj.org/article/2d34f3ae56b24388a82fc46c58e426b3
Publikováno v:
IEEE Open Journal of Circuits and Systems, Vol 5, Pp 314-327 (2024)
This paper describes an analog multi-tone receiver capable of processing three data streams running at 15 Gb/s, one in baseband and two in quadrature over carriers at 15GHz, achieving an aggregate rate of 45Gb/s over a single physical channel. The re
Externí odkaz:
https://doaj.org/article/99562290ceea43bd861c9aaf7f52e319
Autor:
Georgios Konstantopoulos, Yves Louet
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 4337-4353 (2024)
In this work, we investigate the optimal beamformer design for the downlink of Multiple-Input Single-Output (MISO) Non-Orthogonal Multiple Access (NOMA), mainly focusing on a two-user scenario. We derive novel closed-form expressions for the Bit Erro
Externí odkaz:
https://doaj.org/article/d087a6d3ae6149e2815d907a8e300425
Autor:
Taejun Jang, Joon Ho Cho
Publikováno v:
IEEE Access, Vol 12, Pp 3736-3755 (2024)
Recently, it is shown that a spectrally-efficient low-complexity quadrature amplitude modulation (QAM) filter-bank multicarrier (FBMC) system can be designed by relaxing the constraints on the time-frequency (TF) product at the transmitter (TX) and t
Externí odkaz:
https://doaj.org/article/e3cae99f10b34de8b913c26bf3db8bc8
Publikováno v:
Applied Sciences, Vol 14, Iss 19, p 8741 (2024)
This paper presents an enhanced method for the transmission of 3D video in the Multi-view Video plus Depth (MVD) format over Two-Way Relay Channels (TWRC). Our approach addresses the unique challenges of MVD-based 3D video by combining Hierarchical Q
Externí odkaz:
https://doaj.org/article/b88fcbdda46f407982c5408e9c31cd3e
Publikováno v:
Sensors, Vol 24, Iss 15, p 5038 (2024)
In our paper, we propose a generalized version of the Alternating Projections Digital Hard Successive Interference Cancellation (AP-HSIC) algorithm that is capable of decoding any order of constellation M in an M-Quadrature Amplitude Modulation (QAM)
Externí odkaz:
https://doaj.org/article/c6a5f49a1f5a4fa68a9e5cf3c696439a