Performance study on a novel VBLAST modulation scheme under SUC detection by JIANG Zhan-jun, PAN Wen, WANG Yan, YOU Xiao-hu

“…A new modulation scheme was proposed to deal with the error propagation（EP） existing during the successive cancellation（SUC） detection in the VBLAST（vertical Bell labs layered space-time） system.In the scheme,the former demodulated signal was designed to use the modulation with better noise suppression performance（e.g.binary phase shift keying modulation）,and the latter demodulated signal was suggested to employ the modulation with higher frequency ef-ficiency（e.g.multi-decimal modulations）.Analysis and simulation results show that system reliability for SUC detection is improved without penalty to the system availability.…”
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Survey on data transmission in Bluetooth technology by Zhi-hong QIAN, Dan LIU

“…The different impact assessments on performance of data transmission of multiple Bluetooth protocol versions were analyzed.Packet selection algorithms,retransmission mechanisms,interference and security were discussed respectively.Strategies,employing extended-golay code and minimum frequency shift keying (MSK) modulation were proposed,which enhanced the probability of anti-interference and throughput of data packet.Moreover,a co-channel interference suppression approach based on channel switching and MSK modulation was proposed,which improved the carrier to interference ratio and throughput in piconets.Finally,the work was summarized and expectations as well as premeditation of the future were presented.…”
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A–102-dBm Sensitivity Multichannel Heterodyne Wake-Up Receiver With Integrated ADPLL by Linsheng Zhang, Divya Duvvuri, Suprio Bhattacharya, Anjana Dissanayake, Xinjian Liu, Henry L. Bishop, Yaobin Zhang, Travis N. Blalock, Benton H. Calhoun, Steven M. Bowers

“…This article presents a binary frequency-shift keying (BFSK) heterodyne wake-up receiver (WuRx) with -102-dBm sensitivity at 2.4 GHz. …”
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Research on the system error performance of coherent orthogonal frequency division multiplexing system with M-distribution in satellite-to-ground laser communication by Yi WANG, Yaping WANG

“…In order to alleviate the influence of atmospheric turbulence on the performance of satellite-to-ground laser communication system,based on the M-distribution atmospheric channel model,a multi-carrier coherent orthogonal frequency division multiplexing (OFDM) modulation system was proposed for uplink and downlink in the satellite-to-ground laser communication.The closed-form expression of bit error rate (BER) of coherent OFDM modulation system was derived.The relationship between the zenith angle,receiving aperture,signal-to-noise ratio (SNR),optimal beam divergence angle,and optimal transmission radius and the BER were studied under weak,and strong atmosphere turbulence,and compared with binary coherent differential phase shift keying (DPSK) modulation.Both the theory and the simulation results show that compared with coherent DPSK modulation,the bit error performance of the coherent OFDM modulation system in the satellite-to-ground laser communication system is better.…”
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Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction by Shuang LI, Ping WANG, Tao LIU, Yuting PAN, Wei WANG

“…On the basis of Gerchberg-Saxton (GS) algorithm and angular-spectrum theory, an improved wavefront phase correction algorithm to the Laguerre-Gaussian (LG) beams was proposed for the orbital angular momentum-shift keying (OAM-SK) modulation-based free space optical (FSO) communication system under weak atmospheric turbulence.The light field distributions of the probe beam at transmitter and receiver were regarded as the input of the improved wavefront phase correction algorithm.And the correction phase mask was iteratively calculated to correct the distorted LG beams, thereby alleviating the inter-model crosstalk caused by atmospheric turbulence.Simulation results show that the improved wavefront phase correction algorithm is superior to the conditional GS algorithm.And with the increase of the refractive-index structure parameter, the bit error rate (BER) performance of the OAM-SK FSO communication system is significantly improved.…”
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Wired and single sideband wireless service based on a single optical modulator by Weiping LI, Miao KONG, Yanyi WANG, Jianjun YU

“…In order to provide more flexible and convenient service for users in the hybrid transmission network,a novel system using a single optical modulator to provide wired and single side band (SSB) wireless signal was proposed.By combining the application of dual-polarization binary phase shift keying modulator (DP-BPSK),phase shifter and other devices,wired and SSB wireless signals were directly generated to suppress the walk-off effect caused by dispersion,and the effective transmission of 5 Gbit/s SSB wireless signal carried on 40 GHz millimeter wave and 10 Gbit/s wired signal over 65 km single-mode fiber (SMF) were successfully achieved.The experiments show that the application of polarization multiplexing technology and optical subcarrier multiplexing technology can make the signal have a greater improvement in transmission rate and performance,and play an important role in the future broadband communication network.…”
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Asymptotic characterisation of regularised zero‐forcing receiver for imperfect and correlated massive multiple‐input multiple‐output systems by Ayed M. Alrashdi

“…Abstract In this work, the authors present an asymptotic high‐dimensional analysis of the regularised zero‐forcing receiver in terms of its mean‐squared error (MSE) and bit error rate (BER) when used for the recovery of binary phase‐shift keying (BPSK) modulated signals in a massive multiple‐input multiple‐output communication system. …”
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Cognitive Waveform Design for Radar-Communication Transceiver Networks by Yu Yao, Lenan Wu

“…The peak to average power ratio- (PAPR-) constrained optimal solution is achieved by applying the Kalman filtering-based strategy to design the set of ultra-wideband (UWB) transmission pulses and embed into them the information data with the M-ary position phase shift keying modulation technique. In addition to theoretical considerations, the simulation results show an improvement in target scattering coefficient (TSC) estimation and target detection probability as the number of iterations increases, while still transmitting data rates in the range of several Mbps with low bit error rates between CRC transceivers.…”
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Cognitive waveform design for radar-communication transceiver networks by Yu YAO, Yanjie LI, Lenan WU, Pu MIAO, Xiaoyu TANG

“…The system architecture for cognitive radar-communication (CRC) transceiver was proposed.A cognitive waveforms design approach, which is suitable for simultaneously performing both data communication and target detection was presented.This approach aims at estimating target scattering coefficient (TSC) from the radar scene and facilitating high-data-rate communications.In order to minimize the mean square error (MSE) of the TSC, a convex cost function was established.The peak to average power ratio (PAPR)-constrained optimal solution was achieved by applying the Kalman filtering-based strategy to design the set of ultra-wideband (UWB) transmission pulses and embed into them the information data with the M-ary position phase shift keying modulation technique.In addition to theoretical considerations, the simulation results show an improvement in TSC estimation and target detection probability as the number of iterations increases, while still transmitting data rates in the range of several Mbit/s with low bit error rates between CRC transceivers.…”
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Error performance of multi-branch dual-hop PF cooperative systems by Guangqiu LI, Jiayun DONG, Tao JIANG

“…Design of multi-branch dual-hop phase-only forward(PF)cooperative systems with continuous phase frequency shift keying(CPFSK)modulation needs to determine the number of branch and modulation index.The usual solution of determining the above parameters is the time-consuming and inefficient computer simulation.An efficient solution of determining these parameters is theoretical analysis method.Semi-analytical expressions for the average bit error rate(ABER)of multi-branch dual-hop PF cooperative systems in conjunction with discrimination detection CPFSK over time-selective Rayleigh fading channels was presented.Two cases with and without antenna selection at the relays and maximum-ratio combining(MRC)receive diversity at the destination were considered.The simulation results show that numerical calculation results and simulation results for the ABERs of PF，discrimination detection,CPFSK cooperative systems are consistent and show that the above ABER theory results of CPFSK cooperative systems can be used to design PF cooperative systems.…”
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Sparse adaptive constant blind equalization algorithm for sparse multipath channel by Si-yang MA, Hua PENG, Bin WANG

“…In order to improve the convergence rate of the blind equalizer for sparse multipath channel,a novel blind equalization approach called l₀-norm constraint proportionate normalized least mean square constant algorithm was proposed for M-order phase-shift keying (MPSK) signal.Based on the constant modulus characteristics of MPSK signal and the sparse property of equalizer,a new blind equalization cost function with the l₀-norm penalty on the equalizer tap coefficients was firstly constructed.Then the update formula of the tap coefficients was derived according to the gradient descent algorithm.Moreover,the iteration step was updated by drawing upon the normalized proportionate factor.The algorithm not only assigned step sizes proportionate to the magnitude of the current individual tap weights,but also attracted the inactive taps to zero adaptively.Theoretical analysis and simulation results show that the proposed algorithm outperforms the existing blind equalization algorithms for sparse channel in reducing ISI and improving convergence rate.…”
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Transmission Performance Analysis of WDM Radio over Fiber Technology for Next Generation Long-Haul Optical Networks by Badiaa Ait Ahmed, Otman Aghzout, Mounia Chakkour, Fahd Chaoui, Azzeddin Naghar

“…In Digital RoF, the impact analysis of modulation types such as Differential Phase-Shift Keying (DPSK) and Quadrature Amplitude Modulation (QAM) is also introduced. …”
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FPGA-Based Implementation of All-Digital QPSK Carrier Recovery Loop Combining Costas Loop and Maximum Likelihood Frequency Estimator by Kaiyu Wang, Zhiming Song, Xianwei Qi, Qingxin Yan, Zhenan Tang

“…This paper presents an efficient all digital carrier recovery loop (ADCRL) for quadrature phase shift keying (QPSK). The ADCRL combines classic closed-loop carrier recovery circuit, all digital Costas loop (ADCOL), with frequency feedward loop, maximum likelihood frequency estimator (MLFE) so as to make the best use of the advantages of the two types of carrier recovery loops and obtain a more robust performance in the procedure of carrier recovery. …”
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Optically levitated nanoparticles as receiving antennas for low frequency wireless communication by Zhenhai Fu, Jinsheng Xu, Shaochong Zhu, Chaoxiong He, Xunming Zhu, Xiaowen Gao, Han Cai, Peitong He, Zhiming Chen, Yizhou Zhang, Nan Li, Xingfan Chen, Ying Dong, Shiyao Zhu, Cheng Liu, Huizhu Hu

“…The effectiveness of these antennas was experimentally demonstrated by using the frequency shift keying (2FSK) modulation scheme. The experimental results indicate a correlation between error rate and factors such as transmission rate, signal strength, and vacuum degree with a signal strength of approximately 0.1V/m and a bit error rate below 0.1%. …”
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Non-Orthogonality of QAM and Sunflower-like Modulated Coherent-State Signals by Kentaro Kato

“…This paper investigates the non-orthogonality of different coherent-state signal constellations used in quantum communications, namely phase-shift keying (PSK), quadrature-amplitude modulation (QAM), and a newly defined signal named the sunflower-like (SUN) coherent-state signal. …”
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Nonlinear Demodulation and Channel Coding in EBPSK Scheme by Xianqing Chen, Lenan Wu

“…The extended binary phase shift keying (EBPSK) is an efficient modulation technique, and a special impacting filter (SIF) is used in its demodulator to improve the bit error rate (BER) performance. …”
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Analysis of Transmission Characteristics on an MSK-Based Rotating Magnet-Based Mechanical Antenna by Xie He, Qiang Zhou, Jianya Zhang

“…To further reveal the effects of the rotational motion on transmission, this paper investigates the performance analysis of MSK (Minimum Shift Keying)-based RMBMA for the first time. Initially, based on the framework of MSK-based RMBMA, both the information loading of RMBMA and the control strategies of the motor are proposed, such that the impacts of the step response induced by the motor on the information loading are characterized. …”
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A Novel Kernel for RBF Based Neural Networks by Wasim Aftab, Muhammad Moinuddin, Muhammad Shafique Shaikh

“…We discuss adaptive symbol detection for multiple phase shift keying (MPSK) signals as a practical example to show where the angle information can be pivotal which in turn justifies our proposed RBF kernel. …”
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Path Formation Time in the Noise-Limited Fractionated Spacecraft Network with FDMA by Tingting Yan, Shengbo Hu, Jinrong Mo

“…Taking frequency division multiple access (FDMA) with subcarrier binary phase-shift keying (BPSK) modulation as an example, this paper focuses on the issues of constraint to orbital elements and path formation time for the noise-limited fractionated spacecraft network percolating. …”
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Chaotic Spread-Spectrum Communication: A Comparative Study between Chaotic Synchronization and Matched Filtering by Arturs Aboltins, Andreas Ahrens, Nikolajs Tihomorskis

“…We conduct simulations and comparisons of three different communication systems: classic direct sequence spread spectrum (DSSS), chaotic signal fragment-based pseudo-chaotic spread spectrum (PCSS), and chaotic synchronization-based antipodal chaos shift keying (ACSK). These systems possess similar spectral and time domain characteristics, allowing us to shed light on their fundamental differences and limitations in chaos-based communication. …”
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