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This paper is a study of non-linear effects of RF Amplifiers on Communication Systems Performance. High speed data communication is made possible by Multilevel Modulation schemes. This paper presents a study of these non linear effects on…

信息论 · 计算机科学 2011-01-13 Aripirala Manoj Kumar , G. Bharath Reddy , G. Krishna Chaitanya Reddy

In the beginning of 21st century there has been a dramatic shift in the market dynamics of telecommunication services. The transmission from base station to mobile or downlink transmission using M-ary Quadrature Amplitude modulation (QAM)…

其他计算机科学 · 计算机科学 2010-03-30 M. A. Masud , M. Samsuzzaman , M. A. Rahman

This is the second part of the two-part paper considering the communications under the bursty mixed noise composed of white Gaussian noise and colored non-Gaussian impulsive noise. In the first part, based on Gaussian distribution and…

信号处理 · 电气工程与系统科学 2024-05-10 Tianfu Qi , Jun Wang , Zexue Zhao

This paper considers a low-resolution wireless communication system in which transmitted signals are corrupted by fading and additive noise. First, a universal lower bound on the average symbol error probability (SEP), correct for all M-ary…

信号处理 · 电气工程与系统科学 2019-07-02 Samiru Gayan , Hazer Inaltekin , Rajitha Senanayake , Jamie Evans

This paper mainly discusses about three basic digital modulation process ASK, FSK, PSK. These modulation schemes can be characterized by their transmitted symbols which consist of a discrete set of values occurring at gradually spaced…

信号处理 · 电气工程与系统科学 2020-02-11 Subrato Bharati , Mohammad Atikur Rahman , Prajoy Podder

This paper mainly illustrates the Bit error rate performance of M-ary QAM and M-ary PSK for different values of SNR over Rician Fading channel. A signal experiences multipath propagation in the wireless communication system which causes…

信号处理 · 电气工程与系统科学 2020-05-06 Subrato Bharati , Mohammad Atikur Rahman , Prajoy Podder , Muhammad Ashiqul Islam , Mohammad Hossain

The performance analysis of free space optical communication (FSO) systems using relays and spatial diversity at the transmitter end is presented in this paper. The impact of atmospheric turbulence and attenuation caused by different…

信息论 · 计算机科学 2017-09-28 Pranav Kumar Jha , Nitin Kachare , K Kalyani , D. Sriram Kumar

M-ary Quadrature Amplitude Modulation (MQAM) is a commonly used channel modulation technology in wireless communication systems. To achieve dedicated channel modulation for semantic communication (SemCom), we propose an…

信号处理 · 电气工程与系统科学 2026-05-14 Haonan Lu , Rui Meng , Xiaodong Xu , Yiming Liu , Ping Zhang , Dusit Niyato

This paper presents novel information-theoretic PHY layer performance improvement for combating the system fading effects in wireless terrestrial communication applications. Robust space-time system strategies in cooperation with the high…

信号处理 · 电气工程与系统科学 2019-10-31 Ardavan Rahimian

The performance analysis of free space optical communication (FSO) system using relays and spatial diversity at the source is studied in this paper. The effect of atmospheric turbulence and attenuation, caused by different weather…

信号处理 · 电气工程与系统科学 2018-04-03 Pranav Kumar Jha , Nitin Kachare , K Kalyani , D. Sriram Kumar

In this paper, we have considered the optimization of the $M$-ary quadrature amplitude modulation (MQAM) constellation size to minimize the bit energy consumption under average bit error rate (BER) constraints. In the computation of the…

信息论 · 计算机科学 2009-06-23 Qing Chen , Mustafa Cenk Gursoy

This paper considers a wireless communication system with low-resolution quantizers, in which transmitted signals are corrupted by fading and additive noise. For such wireless systems, a universal lower bound on the average symbol error…

信号处理 · 电气工程与系统科学 2019-03-01 Samiru Gayan , Rajitha Senanayake , Hazer Inaltekin , Jamie Evans

M-ary On-Off Frequency-Shift-Keying (OOFSK) is a digital modulation format in which M-ary FSK signaling is overlaid on On/Off keying. This paper investigates the potential of this modulation format in the context of wideband fading…

信息论 · 计算机科学 2007-07-13 Mustafa Cenk Gursoy , Sergio Verdu , H. Vincent Poor

Movable antenna (MA) has demonstrated great potential in enhancing wireless communication performance. In this paper, we investigate an MA-enabled multiple-input multiple-output (MIMO) communication system with spatial modulation (SM),…

信号处理 · 电气工程与系统科学 2026-01-21 Kaihe Wang , Ran Yang , Lipeng Zhu , Rongyan Xi , Yue Xiu , Zhongpei Zhang

Optimal coding over the additive white Gaussian noise channel under the peak energy constraint is studied when there is noisy feedback over an orthogonal additive white Gaussian noise channel. As shown by Pinsker, under the peak energy…

信息论 · 计算机科学 2011-08-19 Yu Xiang , Young-Han Kim

This paper studies the impact of probabilistic shaping on effective signal-to-noise ratios (SNRs) and achievable information rates (AIRs) in a back-to-back configuration and in unrepeated nonlinear fiber transmissions. For back-to-back,…

Capacity of M-ary Amplitude and Phase-Shift Keying(M-APSK) over an Additive White Gaussian Noise(AWGN) channel that also introduces an unknown carrier phase rotation is considered. The phase remains constant over a block of L symbols and it…

信息论 · 计算机科学 2007-07-13 Daniel C. Cunha , Jaime Portugheis

In diffusion-based molecular communication, information is transferred from a transmitter to a receiver using molecular carriers. The low achievable data rate is the main disadvantage of diffusion-based molecular over radio-based…

新兴技术 · 计算机科学 2018-09-18 Tayyebeh Jahani-Nezhad , Foroogh S. Tabataba

In this paper, we newly present a closed-form bit-error rate (BER) expression for an $M$-ary pulse-amplitude modulation ($M$-PAM) over additive white Gaussian noise (AWGN) channels by analytically characterizing the bit decision regions and…

信息论 · 计算机科学 2021-01-05 Thanh V. Pham , Thang V. Nguyen , Anh T. Pham

In this work, targeting, e.g., future generation cellular, microwave-links, or optical fiber systems, we propose a new geometric shaping design for golden angle modulation (GAM) based on a (double) truncated Gaussian input distribution. The…

信息论 · 计算机科学 2018-02-28 Peter Larsson , Lars K. Rasmussen , Mikael Skoglund
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