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Polar codes are a family of capacity-achieving error-correcting codes, and they have been selected as part of the next generation wireless communication standard. Each polar code bit-channel is assigned a reliability value, used to determine which bits transmit information and which parity. Relative reliabilities need to be known by both encoders and decoders: in case of multi-mode systems, where...
Polar codes are capacity achieving error correcting codes that can be decoded through the successive-cancellation algorithm. To improve its error-correction performance, a list-based version called successive-cancellation list (SCL) has been proposed in the past, that however substantially increases the number of time-steps in the decoding process. The simplified SCL (SSCL) decoding algorithm exploits...
The Successive-Cancellation List (SCL) decoding algorithm is one of the most promising approaches towards practical polar code decoding. It is able to provide a good trade-off between error-correction performance and complexity, tunable through the size of the list. In this paper, we show that in the conventional formulation of SCL, there are redundant calculations which do not need to be performed...
The Successive-Cancellation List (SCL) algorithm is one of the best polar code decoding algorithms in terms of trade-offs between complexity and error correction performance. The List-Sphere Decoding (List-SD) algorithm has been recently proposed: it yields a better complexity/performance trade-off than SCL in the decoding of short polar codes, that can be used as component codes for larger polar...
This paper proposes a novel compressed sensing (CS) framework that exploits (i) the sparsity of the samples in some representation domain, and (ii) the governing structure of the samples, with a focus on temperature monitoring using Wireless Sensor Networks (WSN). WSN's have been used for temperature monitoring for automation and surveillance. Despite the benefits, WSN's have their own limitations...
Successive-cancellation list (SCL) decoding is an algorithm that provides very good error-correction performance for polar codes. However, its hardware implementation requires a large amount of memory, mainly to store intermediate results. In this paper, a partitioned SCL algorithm is proposed to reduce the large memory requirements of the conventional SCL algorithm. The decoder tree is broken into...
Polar codes have gained a lot of attention during the past few years, because they can provably achieve the capacity of a memoryless channel. The design of efficient polar code decoders has been an active topic of research. The simple Successive Cancellation (SC) decoding algorithm yields poor error correction performance on short polar codes: the SC- List (SCL) algorithm overcomes this problem, but...
The global supply chain uses seaports for the intermodal transfer of goods dominated by closed shipping containers passing through national borders. Shippers demand accurate and timely delivery at competitive prices. While ports always needed to keep cargo safe from damage and thieves, since 9/11, they must secure cargo against the risk of terror. Terrorists, with or without dangerous materials, seek...
This paper presents a T-F masking method for convolutive blind source separation based on hermitian angle concept. The hermitian angle is calculated between T-F LKdomain mixture vector and reference vector. Two different reference vectors are assumed for calculating two different hermitian angles, and then these angles are clustered with k-means or FCM method to estimate unmixing masks. The well-known...
This paper presents a novel discrete particle swarm optimization (PSO) technique for the high-level synthesis of digital filter data-paths. In this technique, the cost associated with the final digital filter data-path is minimized for obtaining combined area-cum-time optimal digital filter data-paths subject to user-specified constraints on the number of the required arithmetic functional units....
This paper deals with a multiple description video coding system for robust video transmission and error concealment in UMTS noisy channels. To use this method, at first video frames are separated, and each frame is coded with JPEG standard. Then the coded videos are transmitted through a WCDMA channel. The channel is simulated based on Gilbert/Elliot model. We compare the result in threes cases:...
Multimode contour integral method is one of methods in analysis and design of H-plane waveguide circuits. In this method, the effect of higher order modes excited by discontinuities in waveguide structure is considered. This makes to approve the accuracy of method in analysis or design of complex waveguide circuits. In this article, the multimode contour integral method is used to determine the properties...
In this paper, a fault diagnosis scheme to detect and isolate faults commonly occurring in a vehicle alternator system based on an adaptive thresholds approach is developed. The mathematical model of the alternator subsystem is quite involved and highly nonlinear; to simplify the diagnostic scheme, an equivalent linear time varying model based on the input-output behavior of the system is used for...
A novel technique is presented for finite-wordlength (FW) particle swarm optimization (PSO) of BIBO stable FRM digital filters incorporating bilinear-LDI IIR interpolation subfilters. A novel LUT scheme is developed to ensure that the FWPSO automatically searches over permissible FW multiplier coefficient values only in the course of optimization. The salient feature of the proposed LUT scheme is...
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