Kooperativer Bibliotheksverbund

Berlin Brandenburg

and
and

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Wiley Online Library  (46)
Type of Medium
Language
Year
  • 1
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.825-827
    Description: The following nine contributions are dedicated to Prof. Dr‐Ing. Dr‐Ing. E.h. Joachim Hagenauer, who was the Head of the Institute for Communications Engineering at the Munich University of Technology from April 1993 to September 2006. Among the authors are 22 Ph.D. students of Prof. Hagenauer. This editorial provides a brief overview on his enormous contributions to science around Applied Information Theory so far. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Algorithms ; Channels ; Receivers ; State of the Art ; Radio ; Provisioning ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Language: English
    In: European Transactions on Telecommunications, July 2004, Vol.15(4), pp.373-374
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Language: English
    In: European Transactions on Telecommunications, September 2001, Vol.12(5), pp.439-452
    Description: In this paper we discuss different Radio Resource Management (RRM) strategies for smart antenna cellular networks. The focus is on adaptive strategies which combine spatial channel reuse within the cell with dynamic inter—cell channel allocation. In particular, three different SDMA channel allocation strategies are described and compared in terms of complexity as well as traffic capacity. The comparison is done by means of system simulations of a multi—cellular environment. We show that with a growing degree of freedom the RRM strategies yield better results in terms of traffic capacity while the number of handoffs per call increases and the complexity grows.
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.837-843
    Description: Conventionally, detection in multiple‐antenna systems is based on a tree‐search or a lattice‐search with a metric that can be computed by recursively accumulating the corresponding metric increments for a given hypothesis. For that purpose, a multiple‐antenna detector traditionally applies a preprocessing to obtain the search‐metric in a suitable form. In contrast to that, we present a reformulation of the search‐metric that directly allows for an appropriate evaluation of the metric on the underlying structure without the need for a computationally costly preprocessing step. Unlike the traditional approach, the new metric can also be applied when the system has fewer receive than transmit antennas. We present simulation results in which the new metric is applied for turbo detection involving the list‐sequential (LISS) detector that was pioneered by Joachim Hagenauer. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Detectors ; Preprocessing ; Computation ; Communications Engineering ; Computer Simulation ; Antennas ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.873-879
    Description: This paper gives a brief overview of several applications from the emerging interdisciplinary field of genomic coding theory that aims at applying concepts and techniques from the field of coding theory to problems from the field of molecular biology. This is motivated by the high precision and robustness found in genomic processes in addition to the increase in the availability of genomic data for a wide range of species. The considered applications include source coding for DNA classification, channel coding for modelling gene expression with emphasis on the process of translation, existence of error correcting codes in the DNA and channel coding structure in the genetic code. Example results are presented that demonstrate the relevance of the proposed approaches and open questions are formulated to suggest future research work. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Engineering;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.829-835
    Description: A major breakthrough in digital communications was the provisioning of ‘soft’ outputs at each processing stage, with appropriate capabilities to use this as soft inputs in the next processing stage. This allowed for much more performant receivers especially in difficult mobile radio channel conditions, and set the stage for iterative processing. This article will outline the development of soft output algorithms over the last two decades along with associated state‐of‐the‐art applications and conclude with an outlook towards novel applications of the soft principle. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Engineering;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.859-864
    Description: The combination of graphical models and belief propagation algorithms has found wide acceptance in the design of communication systems. We extend the general framework of joint source‐channel decoding on graphs to account for estimation problems in which the goal is not to decode the entire data set but to estimate a function of the transmitted data. This problem is deemed relevant, for example in the context of wireless sensor networks. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Channels ; Communication Systems ; Decoding ; Design Engineering ; Algorithms ; Networks ; Acceptance ; Mathematical Models ; Functionals ; Sensors ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.851-858
    Description: The speech quality in digital mobile communications is improved by using the residual redundancy after speech encoding in source decoding or channel decoding. The latter was investigated at the LNT at Munich University of Technology, the first idea at the IND at RWTH Aachen University. When the two institutes got aware of each other's results, a friendly scientific competition was started by investigating ‘source‐controlled channel decoding’ (SCCD) at the LNT and ‘source optimised channel codes’ (SOCC) at the IND. It turned out, a combination of the two separate approaches would be the best, which led to a fruitful cooperation. The outcome was the ‘joint source and channel coding’ approach, the iterative source and channel decoding (ISCD) and its improvement by applying the extrinsic information transfer (EXIT) chart analysis. In this paper we give a summary of the algorithms and their performances. We also take a look onto the application of the algorithms to real world systems. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Channels ; Decoding ; Speech ; Algorithms ; Coding ; Networks ; Competition ; Redundancy ; Information Transfer ; Encoding ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.845-850
    Description: We give an overview of iterative techniques for bit‐interleaved coded modulation. We start with simple methods where a convolutional code is concatenated with a standard QAM modulation scheme. The mapping is carefully chosen different from Gray mapping such that significant gains can be obtained by an iterative (turbo) receiver. The idea can also be applied to transmit antenna diversity as well as spatial multiplexing (MIMO). We then consider various powerful iterative coding schemes which are under discussion in standardisation for wireless systems beyond 3G such as serial or parallel concatenated convolutional codes, repeat accumulate codes and LDPC codes. We give a comparison in terms of complexity and performance.The main intention is to provide an illustrative overview over relevant applications of the turbo principle in demodulation and decoding. It is a summary of results which have been obtained in collaboration between the Institute of Communications Engineering, TUM and DoCoMo Euro‐Labs. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Modulation ; Coding ; Mapping ; Demodulation ; Antennas ; Multiplexing ; Decoding ; Standards ; Design Engineering ; Receivers ; Communications Engineering ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Language: English
    In: European Transactions on Telecommunications, December 2007, Vol.18(8), pp.881-886
    Description: A novel system‐level simulation environment is presented for the evaluation of step‐index polymer optical fibre transmission systems. Key element is a new fibre model, which incorporates the three major attributes describing light propagation in SI‐POF: the mode‐dependent attenuation, the modal dispersion and the mode coupling process. Inter‐symbol interference (ISI) due to modal dispersion can be mitigated in the receiver by means of electronic dispersion compensation. In this work, we present the performance of an analog equaliser scheme based on a (sub‐)optimal ‐probability (APP) technique, which increases the achievable fibre length for error‐free transmission at 1 Gbit/s from 11 to 53m. Copyright © 2007 John Wiley & Sons, Ltd.
    Keywords: Dispersions ; Mathematical Models ; Optical Fibers ; Electronics ; Lithium ; Computer Simulation ; Fibers ; Compensation ; Attenuation ; Receivers ; Joining ; Propagation (Polymerization) ; Interference ; Communications Engineering ; Telecommunications (General) (Ea) ; Article;
    ISSN: 1124-318X
    E-ISSN: 1541-8251
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages