Zobrazeno 1 - 10
of 461
pro vyhledávání: '"N. Wehn"'
Publikováno v:
Advances in Radio Science, Vol 19, Pp 59-70 (2021)
Carrier synchronization is a crucial part of any wireless receiver, which is required due to frequency and phase offset. In case of transmission in a Time Division Multiple Access system the carrier synchronization has to be carried out for every bur
Externí odkaz:
https://doaj.org/article/ce328cdf34b34ab28fdcff2c129547ea
Publikováno v:
Advances in Radio Science, Vol 16, Pp 43-50 (2018)
The increasing demand for fast wireless communications requires sophisticated baseband signal processing. One of the computational intense tasks here is advanced Forward Error Correction (FEC), especially the decoding. Finding efficient hardware i
Externí odkaz:
https://doaj.org/article/046ffc71425744fa819424a9776149f2
Autor:
S. Weithoffer, N. Wehn
Publikováno v:
Advances in Radio Science, Vol 16, Pp 77-87 (2018)
The wide range of code rates and code block sizes supported by todays wireless communication standards, together with the requirement for a throughput in the order of Gbps, necessitates sophisticated and highly parallel channel decoder architectur
Externí odkaz:
https://doaj.org/article/55830150e2b94a5baee9a5fabcbaa753
Publikováno v:
Advances in Radio Science, Vol 13, Pp 73-80 (2015)
Iterative channel decoders such as Turbo-Code and LDPC decoders show exceptional performance and therefore they are a part of many wireless communication receivers nowadays. These decoders require a soft input, i.e., the logarithmic likelihood ratio
Externí odkaz:
https://doaj.org/article/bb4784abd9404b6dabaa14498a701b4c
Publikováno v:
Advances in Radio Science, Vol 12, Pp 61-67 (2014)
Forward error correction based on trellises has been widely adopted for convolutional codes. Because of their efficiency, they have also gained a lot of interest from a theoretic and algorithm point of view for the decoding of block codes. In this pa
Externí odkaz:
https://doaj.org/article/9e90c4b952744ff78e6b094dca687f10
Publikováno v:
Advances in Radio Science, Vol 12, Pp 75-81 (2014)
Powerful compute clusters and multi-core systems have become widely available in research and industry nowadays. This boost in utilizable computational power tempts people to run compute-intensive tasks on those clusters, either for speed or accuracy
Externí odkaz:
https://doaj.org/article/6c8858f0e08a41fdbd81ac2668f7e314
Autor:
C. Gimmler-Dumont, N. Wehn
Publikováno v:
Advances in Radio Science, Vol 11, Pp 131-136 (2013)
Energy efficient processing is mandatory in todays' mobile devices. For the upcoming multiple-antenna systems, algorithmic flexibility enables the dynamic reaction to changing channel conditions. We show that most of the tree search based MIMO detect
Externí odkaz:
https://doaj.org/article/1cf71cef051e40d7b6b98f4d05d3c7d8
Publikováno v:
Advances in Radio Science, Vol 11, Pp 137-142 (2013)
Synchronization and channel decoding are integral parts of each receiver in wireless communication systems. The task of synchronization is the estimation of the general unknown parameters of phase, frequency and timing offset as well as correction of
Externí odkaz:
https://doaj.org/article/c1a9038684c1413faa88fe9ad3850fc9
Publikováno v:
Advances in Radio Science, Vol 10, Pp 167-173 (2012)
Global navigation satellite systems, e.g. the current GPS and the future European Galileo system, are frequently used in car navigation systems or smart phones to determine the position of a user. The calculation of the mobile position is based on th
Externí odkaz:
https://doaj.org/article/da15093b391d44f3908f00bf63e14980
Publikováno v:
Advances in Radio Science, Vol 10, Pp 175-181 (2012)
Channel coding is a standard technique in all wireless communication systems. In addition to the typically employed methods like convolutional coding, turbo coding or low density parity check (LDPC) coding, algebraic codes are used in many cases. For
Externí odkaz:
https://doaj.org/article/000dbc5c145a47689d7c42dd311b190a