Results 11 to 20 of about 5,084,882 (199)

Quadrature-Quadrature Phase Shift Keying.

, 1986
Quadrature - Quadrature Phase Shift Keying (Q('2)PSK) is a new spectrally efficient digital modulation scheme. It utilizes available signal space dimensions in a more efficient way than the known schemes such as Quadrature Phase Shift Keying (QPSK) and ...
Saha, Debabrata
core   +5 more sources

Reduced-Complexity QAM-Aided Space-Time Shift Keying

, 2011
A novel reduced-complexity near-optimal detection algorithm is proposed for enhancing the recent coherently-detected Space-Time Shift Keying (STSK) scheme employing arbitrary constellations, such as L-point Phase-Shift Keying (PSK) and Quadrature ...
S. Sugiura, Sugiura, Shinya, Chao Xu, L. Hanzo, Xu, Chao, Hanzo, Lajos   +5 more
core   +2 more sources

Area spectral efficiency of soft-decision space–time–frequency shift-keying-aided slow-frequency-hopping multiple access [PDF]

, 2012
Slow-frequency-hopping multiple access (SFHMA) can provide inherent frequency diversity and beneficially randomize the effects of cochannel interference.
Ngo, Hoang Anh, Hoang Anh Ngo, Hanzo, Lajos, Lajos Hanzo   +3 more
core   +1 more source

Reduced-Complexity Soft-Decision Aided Space-Time Shift Keying [PDF]

, 2011
In this letter, we propose to reduce the detection complexity of soft-decision aided Space-Time Shift Keying (STSK). More explicitly, we propose a vector-by-vector based STSK detector, which exhibits a lower complexity compared to the classic block-by ...
Sugiura, Shinya, Ng, Soon, Xu, Chao, Hanzo, Lajos   +3 more
core   +2 more sources

Reduced-Complexity Coherent Versus Non-Coherent QAM-Aided Space-Time Shift Keying [PDF]

, 2011
A novel reduced-complexity near-optimal detection algorithm is proposed for enhancing the recent Coherently-detected Space-Time Shift Keying (CSTSK) scheme employing arbitrary constellations, such as {cal L}-point Phase-Shift Keying (PSK) and Quadrature ...
Sugiura, Shinya, Ng, Soon, Shinya Sugiura, Soon Xin Ng, Chao Xu, Xu, Chao, Hanzo, Lajos, Lajos Hanzo   +7 more
core   +2 more sources

Investigation of a novel structure for 6PolSK-QPSK modulation

EURASIP Journal on Wireless Communications and Networking, 2017
Benefiting from the high spectrum efficiency and power efficiency, 6PolSK-QPSK (6-ary polarization-shift keying quadrature phase-shift keying) is a promising modulation format in coherent optical communication.
Yupeng Li, Ming Li, Jiawei Han, Tingting Han   +3 more
doaj   +1 more source

Dual-Determination of Modulation Types and Signal-to-Noise Ratios Using 2D-ASIQH Features for Next Generation of Wireless Communication Systems

IEEE Access, 2021
In order to pursue rapid development of the new generation of wireless communication systems and elevate their security and efficiency, this paper proposes a novel scheme for automatic dual determination of modulation types and signal to noise ratios ...
Tarik Adnan Almohamad, Mohd Fadzli Mohd Salleh, Mohd Nazri Mahmud, Ismail Rakip Karas, Nor Shahida Mohd Shah, Samir Ahmed Al-Gailani   +5 more
doaj   +1 more source

Spatial modulation and space-time shift keying: optimal performance at a reduced detection complexity [PDF]

, 2013
—In this paper, we propose a comprehensive reduced-complexity detector both for hard-decision-aided as well as for the soft-decision-assisted Spatial Modulation (SM)/Space-Time Shift Keying (STSK).
Sugiura, Shinya, Shinya Sugiura, Soon Xin Ng, Chao Xu, Ng, Soon Xin, Xu, Chao, Hanzo, Lajos, Lajos Hanzo   +7 more
core   +1 more source

All-Optical Regeneration and Format Conversion for 4APSK Signals Based on Nonlinear Effects in HNLF

IEEE Photonics Journal, 2023
An all-optical format conversion and regeneration scheme about 4-ary amplitude and phase shift keying (4APSK) signals is proposed and numerically simulated based on nonlinear effects in the high nonlinear fiber (HNLF).
Qiankun Li, Huashun Wen, Jiali Yang, Qi Xu, Xiongwei Yang, Yameng Li   +5 more
doaj   +1 more source

Performance Comparison between DPSK and OQPSK modulation approaches in multi environments channels with Matlab Simulink models

Wasit Journal of Engineering Sciences, 2019
Phase shift keying modulation approaches are widely used in the communication industry. Differential phase shift keying (DPSK) and Offset Quadrature phase shift keying (OQPSK) schemes are chosen to be investigated is multi environment channels, where ...
Fatima faydhe Al- Azzawi, Faeza Abas Abid, Zainab faydhe Al-Azzawi   +2 more
doaj   +1 more source