Sök:

Sökresultat:

280 Uppsatser om Rayleigh fading channel - Sida 2 av 19

Link QualityControl (LQC) i GPRS/EGPRS

This master thesis has been done at Enea Epact AB. The purpose of this thesis is to develop and implement a Link Quality Control algorithm for GPRS/EPGRS in the current testing tool. A Link Quality Control (LQC) shall take quality values from mobile stations and base stations and decide a codingsscheme that opimizes the throughput of data. The Advantage with LQC is that it adapts the used coding scheme to the channel quality. If the channel quality is too bad for the used coding scheme, a slower coding scheme with more redundancy should be selected.

Design av stimuligenerator för radarmålsökare

During the development of microwave based sensors such as radar target seekers, input signals are needed to verify the performance of the system. Therefore, a channel board has been developed by previous thesis projects at Saab Bofors Dynamics. It uses a technique called Digital Radio Frequency Memory (DRFM). The purpose of this board is to sample and digitally store radio frequency signals in order to reconstruct them after a certain delay.The aim of this thesis project was to use the channel board named above to construct a portable instrument for generation of stimuli signals. This assignment has been divided into two tasks: firstly, to construct and put together the hardware components and secondly, to implement a graphical user interface for the instrument.

Lätt och rätt, så blir kunden mätt - Kanalval och kontaktytor i kundresan för dagligvaruköp

The use of digital devices are widely spread among us. Children have an iPad in their hands before they learn how to talk and we bet you look at your smartphone more times a day then you would like to admit? Interaction through these devices have become so natural in our daily life that we get confused when a retailer does not offer a website or an app. The habit of searching for information in the most accessible channel and buying in the one that offers the benefit of convenience, and of course, saves you money and time, is a common way of shopping these days. This is referred to as multi-channel shopping.

Effektiv betong för småhusproduktion : Betong med högt luftinnehåll för platta på mark

This Masters thesis work describes a comparison between two different methods for estimation of the down channel (base station to mobile subscriber) in Wide-band Code Division Multiple Access (WCDMA). The first estimation method, Optimal Feed-forward Channel Estimation (OFCE), is a conventional method that bases the estimates on data that is known to both sender and receiver, so called pilots. The second method, Decision Directed Channel Estimation (DDCE), is an elaboration of OFCE. It also uses user data for estimation. Simulations show that DDCE, in comparison to OFCE, does not attain an improvement in signal-to-noise-ratio (SNR) for high bit error rates (BER).

Betongbjälklag med limmad matta : olika behandlingars effekt på alkalitet, fukthalt och emissionsbildning

This Masters thesis work describes a comparison between two different methods for estimation of the down channel (base station to mobile subscriber) in Wide-band Code Division Multiple Access (WCDMA). The first estimation method, Optimal Feed-forward Channel Estimation (OFCE), is a conventional method that bases the estimates on data that is known to both sender and receiver, so called pilots. The second method, Decision Directed Channel Estimation (DDCE), is an elaboration of OFCE. It also uses user data for estimation. Simulations show that DDCE, in comparison to OFCE, does not attain an improvement in signal-to-noise-ratio (SNR) for high bit error rates (BER).

Bolibompa-draken behöver inte springa hem längre : En studie i hur anställda på Barnkanalen upplever anpassningen till det nya medielandskapet

Today?s media consumption and viewing behavior has led to an expansion in the marketand resulted in a media convergence. The competition gets fiercer with each player andthe outcome for the linear TV channels has to be to change in some way. This is aqualitative interview study with producers at Sweden?s leading children channel?Barnkanalen?, how they experience the adoption to this new media landscape.

Nyhetsradio : Om skillnaderna i korta riksnyhetssändningar mellan två kommersiella radiostationer och public serviceradion.

The purpose of this BA-thesis was to learn the differences in news broadcasts between one public service radio channel and two commercial radio channels. To do this we used a quantitative analysis method to examine the content of the news broadcasts and then we conducted in-depth interviews with several people working with the different radio channels using a qualitative research interview method to learn their views on news and news broadcasting.We measured the differences between the channels in six areas: subject, headline, news presentation, gender, advertising and sources.Our two main theories were normative theory and media logic.The results found that there were several major differences between the public service radio channel and the two commercial radio channels. Apart from several important differences in the six measured categories we also found that the sound and tone in the public service radio channel was very different from the two commercial radio channels.We also found the public service radio channels news broadcasts to be more serious than the two commercials ones?..

Undersökningsplikt kontra upplysningsplikt vid fastighetsköp

Title: Multi channel publishing: a qualitative study on how Norrköpings Tidningen publishes news in multiple channelsAuthor: Roland AlbinssonThesis supervisor: Per-Anders ForstorpBackground: In this day and age, the media is omnipresent and a part of our daily life. The phenomenon of media convergence can be traced back to the birth of the internet, and today all of the major newspapers have a website of their own. As a result of multichannel publishing, consumers have a wide range of tv channels to choose from, but there is still uncertainty as to whether more channels automatically equates to more and better news. There is no doubt about the fact that multi channel publishing is a necessary survival skill for media conglomerates today, but effects such as news recycling and the concentration of ownership are in conflict with the consumers? availability demands.Purpose: The purpose of this thesis is to, by means of a case study, describe how NT?s multi channel publishing is an expression of media convergence, as well as to study how the news are affected by multi channel publishing.Research procedure: This study is based on three different research methods, observations, text analyses and qualitative interviews.

Lagerprogram för Satellitlager

Texo Application has created robots that they call for satellites; with these you can feed in storage pallets into a satellite storage. Satellite storages consist of channels in height (e.g.3 to 8 pieces) and width (e.g.3 to 100 pieces). Channels can be different long (e.g. 5 to 200 pallets). At deposit of a storage pallet the truck insert the satellite in a channel and then the pallet, the pallet is driven into the channel until it reaches another pallet or the other end.

TV-seriers roll som kanal för produktplacering

Product placement isn´t a new concept, matter of fact it has existed for almost hundred years. On the other hand to use TV-series as a marketing channel for product placement is a present vogue for brands and companies to reach the right target audience. Through product placement in TV-series companies are available to get away with the problem that people zapping commercials. Our purpose with the thesis is to have increased comprehension about TV-series as a channel for product placement considering effect against different target audience, products and brands. For this study we applied a qualitative approach and did six depth interviews with different people to gain several viewpoints.

Flerkanalspublicering : En kvalitativ undersökning av NTs arbete med att publicera nyheter i flera kanaler.

Title: Multi channel publishing: a qualitative study on how Norrköpings Tidningen publishes news in multiple channelsAuthor: Roland AlbinssonThesis supervisor: Per-Anders ForstorpBackground: In this day and age, the media is omnipresent and a part of our daily life. The phenomenon of media convergence can be traced back to the birth of the internet, and today all of the major newspapers have a website of their own. As a result of multichannel publishing, consumers have a wide range of tv channels to choose from, but there is still uncertainty as to whether more channels automatically equates to more and better news. There is no doubt about the fact that multi channel publishing is a necessary survival skill for media conglomerates today, but effects such as news recycling and the concentration of ownership are in conflict with the consumers? availability demands.Purpose: The purpose of this thesis is to, by means of a case study, describe how NT?s multi channel publishing is an expression of media convergence, as well as to study how the news are affected by multi channel publishing.Research procedure: This study is based on three different research methods, observations, text analyses and qualitative interviews.

Från retailer till e-tailer: En studie av konsumentattityder

With the fast development of Internet and the e-commerce during the last decades, retailers are now introducing online stores. This has been adopted as a common strategy within the industry and the phenomenon seems likely to increase over time. Theory based on brand extension is used in this study to explain the effects on brand attitude and the link with willingness to pay when a traditional retailer introduces an online store. We execute an experimental study in order to investigate the effects where we use the offline- and online channel as well as two brands with different strengths as independent variables. Results show that brand attitude and its link to willingness to pay transfers to the online channel.

En bra Chef går hem : - en undersökning av Landstinget i Värmlands chefsbrev

Internal communication is very important for the success of an organization. The county council Landstinget i Värmland is a large organization with many managers on different positions. Every one of these managers gets an email every week, with the message that a new manager letter, called Chef, is published on the intranet. With my paper I am examining what the managers think of this letter, how they use it and if managers on different positions differ from each other in opinions about and use of the letter. I want to find out if there is a need of Chef as a part of the internal communication of Landstinget i Värmland.To answer these questions, I have chosen a quantitative method in the form of a questionnaire which is send to all the receivers of the manager letter.

Ternära koder för variabelt felskydd

Ternary codes for unequal error protection is a part of a communication system where different parts of the information to be transmitted can receive different amount of error protection. There are a lot of applications where the channel conditions fluctuate so that reliable or acceptable communication can not be guaranteed. Regardless whether the fluctuations of the channel are intentional or not the idea is to let the coderate decrease so that the error correcting capability can increase for the part of the information to be more protected. By using the support, the nonzero positions of the ternary code, a new binary code can be extracted with properties different from the ternary code in the sense of cardinality and minimum Hamming distance. When the channel conditions are good the receiver decodes the message using ternary decisions and receives all information included in the codeword.

småföretagens användning av Internet som en marknadsföringsstrategi : en fallstudie av tre företag i stockholmsregionen

This study is on how small companies can use the Internet as a part of their marketing strategy to gain a leverage on their competitors with small means to survive and expand in the global market. Many Swedish small companies still don?t have a sufficient knowledge on how to use the communication channel despite the various advantages the Internet offers.Case studies were conducted of how AdLibris, A-lotterierna AB and SF-bokhandeln perceived the importance of using the Internet as a part of their communications strategy.This new communication channel demand new ways of applying traditional marketing principals. Careful analysis of the interviews and how the answers relate to new and old marketing theories makes the bulk of this study. The conclusion is that the Internet solely is not enough, a combination with traditional marketing tools is the way to succeed in their marketing efforts.

<- Föregående sida 2 Nästa sida ->