Results 151 to 160 of about 2,823 (194)

Photonic fully-connected hybrid beamforming using microring weight banks. [PDF]

Commun Eng
Nichols M, Morison H, Eshaghi A, Shastri B, Lampe L.   +4 more
europepmc   +1 more source

Grating based interferometric devices on a silicon photonic platform. [PDF]

Sci Rep
Mikhail TJG, Swillam SM, Swillam MA.
europepmc   +1 more source

Joint communication and sensing with structured beams carrying orbital angular momentum. [PDF]

Nat Commun
Shen R, Ghasempour Y.
europepmc   +1 more source

Fully integrated hybrid multimode-multiwavelength photonic processor with picosecond latency. [PDF]

Nat Commun
Khaled A, Aadhi A, Huang C, Tait AN, Shastri BJ.   +4 more
europepmc   +1 more source

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Quadrature Spatial Modulation

IEEE Transactions on Vehicular Technology, 2015
This paper proposes a new multiple-input–multiple-output (MIMO) technique called quadrature spatial modulation (QSM). QSM enhances the overall throughput of conventional SM systems by using an extra modulation spatial dimension. The current SM technique uses only the real part of the SM constellation, and the proposed method in this paper extends this ...
Raed Mesleh, Salama Ikki
exaly   +2 more sources

Differential Quadrature Spatial Modulation

IEEE Transactions on Communications, 2017
Quadrature spatial modulation (QSM) is a recent multiple input multiple output transmission scheme that attracted significant research interest. QSM expands the spatial constellation diagram of spatial modulation (SM) to enhance the overall spectral efficiency while retaining all SM inherent advantages.
Raed Mesleh, Abdelhamid Younis, Saud Althunibat   +2 more
exaly   +2 more sources

Generalized Precoding-Aided Quadrature Spatial Modulation

IEEE Transactions on Vehicular Technology, 2017
In this paper, we propose a novel scheme, which is called generalized precoding-aided quadrature spatial modulation (GPQSM), that extends the conventional quadrature spatial modulation to the receiver side. In GPQSM, spatial modulation works in both the in-phase and quadrature parts of the received signals, thus conveying additional information bits ...
Xiang Cheng, Moon Ho Lee, Miaowen Wen
exaly   +2 more sources

Novel detection schemes for generalized quadrature spatial modulation

International Journal of Communication Systems, 2021
SummarySpatial Modulation (SM) is a technology that incorporates digital modulation and coding with multiple antennas to achieve high data rates along with improved energy efficiency. Quadrature spatial modulation (QSM), which extends the transmitted signals to in‐phase and quadrature domains, has recently been proposed to improve spectral efficiency ...
Yogesh Trivedi, Sagar B Patel
exaly   +2 more sources

Quadrature Spatial Modulation Decoding Complexity: Study and Reduction

IEEE Wireless Communications Letters, 2017
This letter presents the computational complexity reduction of the maximum likelihood-quadrature spatial modulation (QSM-ML) decoder as compared with the conventional SM-ML. Furthermore, a novel reduced-complexity (RC) sphere decoder algorithm, especially designed for QSM decoders, is proposed. It is shown that the QSM-RC algorithm achieves the optimum
Octavia Dobre, Ibrahim Al-Nahhal, Salama Ikki   +2 more
exaly   +2 more sources