Results 31 to 40 of about 765,447 (285)
Remote Sensing, 2023 Autonomous localization without local wireless facilities is proven as an efficient way for realizing location-based services in complex urban environments. The precision of the current map-matching algorithms is subject to the poor ability of integrated
Chaoyang Shi +6 more
doaj +1 more source
Low-Floor Tanner Codes via Hamming-Node or RSCC-Node Doping [PDF]
, 2006 We study the design of structured Tanner codes with low error-rate floors on the AWGN channel. The design technique involves the “doping” of standard LDPC (proto-)graphs, by which we mean Hamming or recursive systematic convolutional (RSC) code ...
Abu-Surra, Shadi +2 more
core +1 more source
Error Floors of LDPC Coded BICM
2007 IEEE International Conference on Communications, 2007 In recent years performance prediction for communication systems utilizing iteratively decodable codes has been of considerable interest. There have been significant breakthroughs as far as the analysis of LDPC code ensembles is concerned but the more practical problem of predicting the FER/BER of a particular code has proved to be much more difficult.
Ramamoorthy, Aditya, Varnica, Nedeljko
openaire +3 more sources
Linear equalizers for quasi-synchronous block spreading CDMA systems [PDF]
, 2009 Recently, a block spreading code division multiple access (BS-CDMA) technique was presented whereby user-specific preceding along with orthogonal spreading codes are used to achieve multi-user interference (MUI) free when all users arrive at the base ...
Bocus, MZ, Coon, JP, Yue, Wang
core +2 more sources
Error Floor Analysis of LDPC Column Layered Decoders [PDF]
IEEE Communications Letters, 2022 In this paper, we analyze the error floor of column layered decoders, also known as shuffled decoders, for low-density parity-check (LDPC) codes under saturating sum-product algorithm (SPA). To estimate the error floor, we evaluate the failure rate of different trapping sets (TSs) that contribute to the frame error rate in the error floor region.
Ali Farsiabi, Amir H. Banihashemi
openaire +2 more sources
Mechanics Model of Floor Heave: Case Study on Thin Coal Seam with Soft Roof and Floor
Applied Sciences, 2023 The fully mechanized caving roadway’s floor heave has a significant impact on the stability of the narrow coal pillars, the filling body next to the roadway, as well as the entire roadway.
Peng Huang +5 more
doaj +1 more source
Error-rate floors in differential n-level phase-shift-keying coherent receivers employing electronic dispersion equalisation [PDF]
, 2011 A model for the phase noise influence in differential n-level phase shift keying (nPSK) systems and 2n-level quadrature amplitude modulated (2nQAM) systems employing electronic dispersion equalization and quadruple carrier phase extraction is presented ...
Friberg, Ari T. +5 more
core +1 more source
Augmented decoders for LDPC codes
EURASIP Journal on Wireless Communications and Networking, 2018 The performance of a belief propagation decoder for low-density parity-check codes is limited by the presence of trapping sets in the code’s graph. This leads to an error floor at higher signal-to-noise ratios.
Alex R. Rigby +4 more
doaj +1 more source
Sensors, 2023 Pressure sensors integrated in surfaces, such as the floor, can enable movement, event, and object detection with relatively little effort and without raising privacy concerns, such as video surveillance.
Asier Alvarez Rueda +7 more
doaj +1 more source
5-Gbit/s BER performance on an all fiber-optic add/drop device based on a taper-resonator-taper structure [PDF]
, 2000 We present an all fiber-optic add/drop device based on a taper-resonator-taper structure with improved characteristics. Several gigahertz bandwidths are observed using microspheres having diameters ranging from 30 to 50 μm.
Bhardwaj, Ashish +3 more
core +1 more source