We derive universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding by using generalized packing lemmas for the type method. Using our classical-quantum universal ...
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We derive universal classical-quantum superposition coding and universal classical-quantum multiple access channel coding by using generalized packing lemmas for the type method. Using our classical-quantum universal superposition code, we establish the capacity region of a classical-quantum compound broadcast channel with degraded message sets. Our universal classical-quantum multiple access channel codes have two types of codes. One is a code with joint decoding and the other is a code with separate decoding. It is not so easy to construct a former code that universally achieves general points of the capacity region beyond corner points. First, we construct the latter code that universally achieves general points of the capacity region. Then, converting the latter code to the former coder, we construct the above desired code with the former type.
This paper investigates a new communication system where two nodes want to disseminate highly correlated contents to a single destination and can be applied for densely deployed wireless sensors networks applications....
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This paper investigates a new communication system where two nodes want to disseminate highly correlated contents to a single destination and can be applied for densely deployed wireless sensors networks applications. Motivated by their capacity-achieving performance and existing practical implementations, the proposed communication scheme is fully based on Low-Density Parity-Check (LDPC) codes for data compression and channel coding. More specifically, we consider a network of two correlated binary sources with two orthogonal communication phases. Data are encoded at the first source with an LDPC channel code and broadcast in the first phase. Based on the first source received data, the second source computes the correlation vector and applies a Joint Source-channel (JSC) LDPC code, which output is communicated in the second phase. At the receiver, the whole network is mapped on a joint factor graph over which an iterative message-passing joint decoder is proposed. The aim of the joint decoder is to exploit the residual correlation between the sources for better estimation. Simulation results are investigated and compared to the theoretical limits and to an LDPC-based distributed coding system where no inter-node compression is applied.
Let (S1,i, S2,i) ∼ i.i.d p(s1, s 2), i = 1, 2, . . . be a memoryless correlated partial side information sequence. In this work we study channel coding and source coding problems, where the encoder is informed with t...
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With the progress of human civilization and the development of society, aerospace technology is more and more widely used in people’s daily life, but the channel coding based on spacecraft has not been widely used. C...
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5G is the next generation of mobile communications networks which will use cutting-edge network technologies to deliver enhanced mobile connectivity. 5G has introduced new requirements for channel coding in its three ...
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5G is the next generation of mobile communications networks which will use cutting-edge network technologies to deliver enhanced mobile connectivity. 5G has introduced new requirements for channel coding in its three different service classes which are enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC) and massive machine-type communications (mMTC). eMBB is expected to keep up with consumer's insatiable demand for high mobile data rates to support data-extensive applications. mMTC will provide connectivity to a massive number of connected devices sending short data packets simultaneously to support applications such as Internet of Things (IoT). Finally, URLLC will ensure reliable low latency connectivity to support mission-critical latency-sensitive applications such as telesurgery. To address these new requirements, several new channel coding schemes are being developed. This review article provides a detailed analysis of the new channel coding challenges set out by 5G. A detailed review of existing and emerging solutions is provided. Moreover, simulation are performed to assess the performances of Low-Density Parity-Check (LDPC) codes and Polar codes used in 5G's eMBB. Directions for future works and new solutions for 5G channel coding are also discussed.
In this paper, we present the performance of a multitone code division multiple access (MT-CDMA) system by analyzing the effect of coding. We use convolutionally coded substreams rather than serial-to-parallel convert...
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ISBN:
(纸本)0819442534
In this paper, we present the performance of a multitone code division multiple access (MT-CDMA) system by analyzing the effect of coding. We use convolutionally coded substreams rather than serial-to-parallel converted data to modulate different subcarriers. The bit error rate bound for the decoding metric is derived. The coded and uncoded performance bounds are compared with respect to equal bandwidth, bit rate and other communication resources. We also present the performance trade-off for different coded modulation schemes. Our results indicate that the performance of an MT-CDMA is significantly improved when channel coding is applied.
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 d...
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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.< >
The aim of this work is to develop a dynamic coding strategy for a Multi user MIMO NOMA 5G downlink communication by means of concatenation of coding methods. The ultimate motive behind 5G technology is to deliver dat...
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The result of the research in this paper is a mathematical model of procedures of statistical rules to determine the possibility of using multialternative methods of decision-making in problems of decoding a full code...
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The result of the research in this paper is a mathematical model of procedures of statistical rules to determine the possibility of using multialternative methods of decision-making in problems of decoding a full code structure. Rules and measures of information are defined, and decision thresholds are established in order to restore full information data flow.
A selection method of possible code words in channel coding systems is presented. The proposed method is for channel coding of digital communication systems. Measuring the error correction capability with reunion junc...
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