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Adaptive hierarchical coding and modulation scheme over satellite channels

IET COMMUNICATIONS 2019年第17期13卷 2834-2839页

作者： He, Rui Yang, Dewei Wang, Hua Kuang, Jingming Beijing Inst Technol Sch Informat & Elect Beijing Peoples R China

In this study, a new scheme called adaptive hierarchical coding and modulation has been proposed, based on Adaptive coding and modulation (ACM) and hierarchical modulation (HM). The primary contribution of this study is summarised as the following aspects. Firstly, 16- to 64-APSK constellations with size and labelling optimisation method are proposed for HM, which can be adapted to transmitting multiple hierarchies with different QoS streams and to the non-linear satellite channels due to a lower peak-to-average power ratio compared to traditional hierarchical QAM modulation. Bit channel capacity and Chernoff error bound are introduced to optimise size and labelling of the constellation with interior-point algorithm and modified binary switch algorithm for a specific channel model to get a better performance. Secondly, combining with optimised constellations, coding and modulation modes set is obtained from using constellation design and optimisation method, with different modulation orders and code rates. And over satellite channels with rain and location attenuation, the proposed scheme is able to adapt itself to a changing channel condition and increase the transmission rate compared with ACM schemes of DVB-S2 and DVB-S2X standard.

关键词： optimisation modulation coding phase shift keying quadrature amplitude modulation quality of service satellite communication error statistics channel capacity adaptive codes adaptive modulation wireless channels telecommunication switching adaptive hierarchical coding hierarchical modulation HM labelling optimisation method nonlinear satellite channels peak-to-average power ratio traditional hierarchical QAM modulation bit channel capacity specific channel model optimised constellations modulation modes constellation design code rates ACM schemes adaptive coding and modulation scheme modulation orders channel condition QoS streams 16-to 64-APSK constellations interior-point algorithm modified binary switch algorithm modulation modes set location attenuation rain attenuation transmission rate DVB-S2X standard DVB-S2 standard Chernoff error bound

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New concatenated coding and space-time modulation scheme for MIMO wireless communications

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IET COMMUNICATIONS 2007年第6期1卷 1111-1117页

作者： Wu, Z. Wang, X. Zhang, R. Concordia Univ Dept Elect & Comp Engn Montreal PQ H3G 1M8 Canada

Zheng and Tse have demonstrated that there exists an optimal trade-off between diversity gain and multiplexing gain. To realise the predicted optimal trade-off, we propose a new multiple-input multiple-output transmission scheme for a concatenated coding and space-time (ST) modulation system aimed at applications that require flexible trade-off between performance and data rate. The proposed scheme is multi-layered with linear ST modulation to allow various multiplexing gain. Through a judicious design of the inner ST modulation, the optimisation of spatial multiplexing is made simple. Moreover, a joint iterative receiver based on MMSE criterion with a priori information is developed to reduce computational complexity. Simulation results are provided to demonstrate the merits of the new design.

关键词： diversity reception iterative methods diversity gain multiplexing gain space-time codes MIMO wireless communications optimisation mean square error methods concatenated coding space-time modulation scheme MMSE criterion concatenated codes multiple-input multiple-output transmission scheme modulation coding multiplexing joint iterative receiver MIMO communication spatial multiplexing optimisation

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Adaptive coding and modulation for the DVB-S2 standard interactive applications: Capacity assessment and key system issues

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IEEE WIRELESS COMMUNICATIONS 2007年第4期14卷 61-69页

作者： Alberty, Eric Defever, Sophie Moreau, Cyrille De Gaudenzi, Riccardo Ginesi, Alberto Rinaldo, Rita Gallinaro, Gennaro Vernucci, A. EADS Astrium Toulouse France European Space Agcy ESTEC RF Payload & Syst Div NL-2200 AG Noordwijk Netherlands Space Engn SpA Rome Italy

Point-to-point multibeam satellite systems based on the DVB-S standard [1] are currently designed for link closure in the worst-case propagation and location conditions. The DVB-S standard, conceived for broadcasting applications, considers a fixed coding rate and modulation format that are selected according to the assumed coverage and availability requirements. This approach implies the occurrence of high margins in the majority of the cases, when interference and propagation conditions allow for higher signal-to-noise-plus-interference ratio. The adaptive coding and modulation (ACM) introduction in the new DVB-S2 standard [2] for the interactive service profile opens up a number of appealing opportunities for the design and development of satellite broadband networks. In this article we show how the ACM introduction in the,satellite downlink enables greatly enhanced system performance but also has a profound impact on the way the system and some of the key system components are designed.

关键词： Adaptive coding modulation coding Digital video broadcasting Physical layer Satellite broadcasting Downlink Attenuation Satellite antennas Interference Bit rate

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coding AND modulation TECHNIQUES FOR FREQUENCY-HOPPED SPREAD-SPECTRUM COMMUNICATIONS OVER A PULSE-BURST JAMMED RAYLEIGH FADING CHANNEL

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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 1985年第5期3卷 644-651页

作者： MILSTEIN, LB DAVIDOVICI, S SCHILLING, DL RUTGERS STATE UNIV DEPT ELECT ENGNPISCATAWAYNJ 08854 CUNY CITY COLL DEPT ELECT ENGNNEW YORKNY 10031

In this paper, the results of comparing the performance of various forward error correction techniques and several modulation formats when used over a nonselective Rayleigh fading channel in the presence of a pulse-burst jammer are presented. Both binary and nonbinary codes are considered, as well as concatenated codes consisting of either a block or a convolutional inner code and a Reed-Solomon outer code. Finally, the use of side information to allow the decoding of both erasures and errors is also analyzed.

关键词： Pulse modulation Frequency modulation modulation coding Spread spectrum communication Jamming Fading Forward error correction Concatenated codes Convolutional codes Reed-Solomon codes

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coding and modulation under power constraints

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IEEE PERSONAL COMMUNICATIONS 1998年第3期5卷 32-39页

作者： Biglieri, E Caire, G Taricco, G Politecn Torino Dept Elect Engn Turin Italy

An issue arising at the physical layer in digital wireless transmission is the choice of the coding modulation scheme taking into account the availability of a limited energy source. This article is devoted to a description of the rationales behind this choice. As the latter depends on the channel model, we examine four of these, namely, the Gaussian channel, the independent-fading channel, the block-fading channel, and a channel where the transmission quality is limited by interference rather than by noise. Code selection and power-allocation strategies are discussed.

关键词： modulation coding Computer integrated manufacturing Power measurement Bandwidth Interference Signal to noise ratio Fading Attenuation Land mobile radio Personal communication networks

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SOURCE-coding, CHANNEL coding AND modulation TECHNIQUES USED IN THE ATVA-PROGRESSIVE SYSTEM

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IEEE TRANSACTIONS ON BROADCASTING 1991年第4期37卷 170-172页

作者： KRAUSS, JA Rockville MD USA

The ATVA-progressive system, an all-digital high-definition television system that delivers very high quality pictures to the home within a 6-MHz channel in the presence of noise, ghosts, and frequency distortion is described. The system achieves a high degree of data compression by means of motion compensation and transform/subband coding, and only transform/subband coefficients with significant energy are transmitted. For terrestrial transmission, an all-digital format that uses a single carrier with double sideband suppressed carrier quadrature modulation is used. The source signal, source coding, channel coding, modulation, and performance of the system are discussed.< >

关键词： Source coding Channel coding modulation coding TV Motion compensation Motion estimation Quantization Frequency Motion analysis Bit rate

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Absolute added correlative coding: an enhanced M-PAM modulation format

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ELECTRONICS LETTERS 2015年第20期51卷 1593-1594页

作者： Dong-Nhat, N. Malekmohammadi, A. Univ Nottingham Appl Electromagnet & Telecommun Res Grp George Green Inst Electromagnet Res Nottingham NG7 2RD England

The performance assessment of a novel multilevel modulation format based on partial-response signalling called absolute added correlative coding (AACC) by numerical simulations is delineated, targeting short-range and interconnect high-speed optical networks. The spectral efficiency, chromatic dispersion tolerance and receiver sensitivity of 4-instensity level AACC are discussed and compared against other well-known existing modulation formats, namely, non-return-to-zero on-off keying and 4-ary pulse-amplitude modulation (4-PAM). The robustness of the higher order of AACC over 8-PAM and 16-PAM is also discussed.

关键词： amplitude shift keying optical modulation pulse amplitude modulation modulation coding optical interconnections optical fibre networks absolute added correlative coding 4-instensity level AACC M-PAM modulation format performance assessment multilevel modulation format partial-response signalling numerical simulations short-range target high-speed optical network interconnection spectral efficiency chromatic dispersion tolerance receiver sensitivity nonreturn-to-zero on-off keying modulation 4-ary pulse-amplitude modulation

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SOURCE-coding, CHANNEL coding AND modulation TECHNIQUES USED IN THE ADTV SYSTEM

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IEEE TRANSACTIONS ON BROADCASTING 1991年第4期37卷 166-169页

作者： REITMEIER, GA BASILE, C KENEMAN, SA N AMER PHILIPS LIGHTING CORP PHILIPS LABSDEPT ADV TELEVIS SYSTBRIARCLIFF MANORNY

The three key elements of the advanced digital television (ADTV) system are described. These elements are source coding based on MPEG++ data compression, channel coding based on a prioritized data transport, and modul... 详细信息

关键词： Source coding Channel coding modulation coding Video compression Transform coding HDTV Discrete cosine transforms Digital TV Robustness Displays

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Cognitive cross network design with physical-layer coding and spatial modulation

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ELECTRONICS LETTERS 2017年第6期53卷 432-434页

作者： Ustunbas, S. Basar, E. Aygolu, U. Istanbul Tech Univ Fac Elect & Elect Engn TR-34469 Istanbul Turkey

A cognitive cross network where both primary and secondary users' receivers are closer to the transmitter of the other user;however, the distances to their own transmitters are too large that a relay is required for a reliable communication, is considered. To this end, the secondary user shares its relay with the primary user (PU) by means of physical-layer network coding in exchange for access to PU's licensed band. It is assumed that both transmitters and the relay adopt the emerging spatial modulation concept to improve the error performance. Bit error probability of the proposed scheme is analytically derived and supported via computer simulation results.

关键词： cognitive radio radio transmitters radio receivers telecommunication network reliability relay networks (telecommunication) network coding error statistics modulation coding cognitive cross network design primary user receiver secondary user receiver communication reliability physical- layer network coding PU licensed band spatial modulation concept bit error probability error performance improvement computer simulation

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SumComp: coding for Digital Over-the-Air Computation via the Ring of Integers

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IEEE TRANSACTIONS ON COMMUNICATIONS 2025年第2期73卷 752-767页

作者： Razavikia, Saeed da Silva Jr, Jose Mairton Barros Fischione, Carlo KTH Royal Inst Technol Sch Elect Engn & Comp Sci S-11428 Stockholm Sweden Uppsala Univ Dept Informat Technol S-75105 Uppsala Sweden KTH Royal Inst Technol Sch Elect Engn & Comp Sci & Digital Futures S-11428 Stockholm Sweden

Communication and computation are traditionally treated as separate entities, allowing for individual optimizations. However, many applications focus on local information's functionality rather than the information itself. For such cases, harnessing interference for computation in a multiple access channel through digital over-the-air computation can notably increase the computation, as established by the ChannelComp method. However, the coding scheme originally proposed in ChannelComp may suffer from high computational complexity because it is general and is not optimized for specific modulation categories. Therefore, this study considers a specific category of digital modulations for over-the-air computations, quadrature amplitude modulation (QAM) and pulse-amplitude modulation (PAM), for which we introduce a novel coding scheme called SumComp. Furthermore, we derive a mean squared error (MSE) analysis for SumComp coding in the computation of the arithmetic mean function and establish an upper bound on the mean absolute error (MAE) for a set of nomographic functions. Simulation results are presented to affirm the superior performance of SumComp coding compared to traditional analog over-the-air computation and the original coding in ChannelComp approaches in terms of both MSE and MAE over a noisy multiple access channel. Specifically, SumComp coding shows at least 10 dB improvements for computing arithmetic and geometric mean on the normalized MSE for low noise scenarios.

关键词： Encoding modulation Digital modulation Wireless networks Quadrature amplitude modulation Lattices Optimization Constellation points digital modulation Gaussian integers over-the-air computation modulation coding ring of integers

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