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1. Quadrature Amplitude Modulation

   This chapter treats quadrature amplitude modulation using random modulating signals, including single sideband (SSB), quadrature modulation scheme...

   Marcelo S. Alencar, Valdemar C. da Rocha Jr. in Communication Systems

   Chapter 2022
   

2. In-phase and quadrature filter shape index modulation

   This paper proposes a novel modulation scheme called “In Phase and Quadrature-Filter Shape Index Modulation” (IQ-FSIM). It aims to enhance the...

   Majed Saad, Ali Chamas Al Ghouwayel, ... Jacques Palicot in EURASIP Journal on Wireless Communications and Networking

   Article Open access 19 April 2023
   

3. Fully Quadrature Spatial Modulation Performance with Imperfect Channel Information

   “Quadrature spatial modulation (QSM)” uses the in-phase and quadrature components to convey the information, which improves the data rate of the...

   Kiran Gunde, Anuradha Sundru in Proceedings of Second International Conference on Computational Electronics for Wireless Communications

   Conference paper 2023
   

4. Application of Blind Signal Separation Methods in the Problems on Improving the Interference Immunity of Space Communication Systems with Quadrature Amplitude Modulation

   Abstract

   The paper focuses on the issues of improving the interference immunity of space communication systems with quadrature amplitude modulation....

   P. S. Tyapkin, N. A. Vazhenin, A. P. Plokhikh in Russian Aeronautics

   Article 01 August 2023
   

5. Sixteen-Channel 1920 Gbps Full-Duplex Optical Fiber Coherent Communication System Based on Dual Polarization-64 Quadrature Amplitude Modulation for 5G Fronthaul

   Abstract

   This article presents a bidirectional optical fiber communication system employing Dual Polarization-64 Quadrature Amplitude Modulation and...

   K. F. Ahmed, A. M. J. Al-Hindawi in Journal of Communications Technology and Electronics

   Article 01 December 2023
   

6. Performance Comparison of M-ary Phase Shift Keying and M-ary Quadrature Amplitude Modulation Techniques Under Fading Channels

   Modulation techniques and channel conditions play a major role in the development of wireless communication systems. Information can be sent easily...

   Tadele A. Abose, Ketema T. Megersa, ... Moti B. Dinagde in Communication and Intelligent Systems

   Conference paper 2024
   

7. High Capacity 64-Quadrature Amplitude Modulation Based Optical Coherent Transceiver for 60 GHz Radio over Fiber System

   The high-capacity data transmission over an optical communication network is the bottleneck to meeting future communication needs due to the...

   Devendra Chack, Sunil Narayan Thool in Wireless Personal Communications

   Article 01 August 2023
   

8. Baseband Modulation

   The basic way radios increase their spectral efficiency is by combining multiple bits into a single symbol, a process known as baseband modulation....

   Karim Abbas in From Algorithms to Hardware Architectures

   Chapter 2023
   

9. Fully Improved Quadrature Spatial Modulation

   In this paper, novel space modulation techniques (SMT), which we called fully improved quadrature spatial modulation (FIQSM) and fully improved...

   Yasin Celik in Arabian Journal for Science and Engineering

   Article 27 February 2021
   

10. Capacity analysis of cooperative amplify and forward–quadrature spatial modulation MIMO system

    Quadrature spatial modulation (QSM) multiple-input multiple-output system attracted substantial research interests lately driven by the several...

    Khadiga Eltira, Abdelhamid Younis, Raed Mesleh in Wireless Networks

    Article 21 October 2021
    

11. Digital Modulation: The Basic Principles

    The fundamental modulation methods used in 5G are Pi/2 BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM, and 1024-QAM. These are the methods, therefore, that we...

    Douglas H. Morais in Key 5G/5G-Advanced Physical Layer Technologies

    Chapter 2024
    

12. Method for Calculating the Probabilities of Bit Errors in Radio Signal Reception with QPSK-Modulation in the Presence of Interference with Linear Frequency Modulation

    Abstract

    Based on the developed methodology for analyzing the noise immunity of receiving radio signals with quadrature phase shift keying (QPSK), the...

    V. V. Zvonarev, A. S. Popov in Journal of Communications Technology and Electronics

    Article 01 November 2023
    

13. Modified Generalised Quadrature Spatial Modulation Performance over Weibull Fading Channel

    Modified generalised quadrature spatial modulation scheme is developed to increase the data rate of quadrature spatial modulation. By considering...

    Kiran Gunde, Anuradha Sundru in Proceedings of International Conference on Communication and Computational Technologies

    Conference paper 2021
    

14. Performance Investigation of 400 × 100 Gb/s Ultra-Dense WDM System Using Different Modulation Techniques with Varying Channel Spacing

    In this work, we have designed an ultra-dense wavelength division multiplexing (UD-WDM) system for 400 channels with a bit rate of 100 Gb/s per...

    Rajeev, Chakresh Kumar in Wireless Personal Communications

    Article 01 February 2024
    

15. Digital Modulation in Detail

    This chapter reviews digital modulation concepts. Tell the story of the “G River Boatman” about the concept of OFDMA and SC-FDMA modulation scheme.

    José Luiz Frauendorf, Érika Almeida de Souza in The Architectural and Technological Revolution of 5G

    Chapter 2023
    

16. Digital Modulation: The Basic Principles

    The fundamental modulation methods used in 5G NR are Pi/2 BPSK, QPSK, 16-QAM, 64-QAM, and 256-QAM. Those used in Wi-Fi 6 are BPSK, QPSK, 16-QAM,...

    Douglas H. Morais in 5G NR, Wi-Fi 6, and Bluetooth LE 5

    Chapter 2023
    

17. Amplitude Modulation

    A common lay definition of the verb to modulate is “to tune to a certain key or pitch.” In amplitude modulation, this is precisely what is being...

    Jerry D. Gibson in Analog Communications

    Chapter 2023
    

18. Performance of the RoF Network with Multi-carrier Modulation Scheme

    Nowadays to fulfill the demand for a high data rate, radio-over-fiber (RoF) technology is a very good candidate. RoF technology has become the...

    Praveen Yadav, R. G. Sangeetha in Futuristic Communication and Network Technologies

    Conference paper 2023
    

19. Analysis of Modulation Techniques for Short Range V2V Communication

    Vehicle-to-vehicle or V2V communication, a progressively develo** technology that uses IEEE 802.11 p-based systems to enable vehicular...

    Vansha Kher, Sanjeev Sharma, ... K. Praneetha in Intelligent Communication Technologies and Virtual Mobile Networks

    Conference paper 2023
    

20. Coded Modulation

    For the digital communications systems discussed thus far in the book, we have assumed that coding (operations on the binary data stream) and...

    Jerry D. Gibson in Digital Communications

    Chapter 2023