Title: | Contributions to time-frequency synchronization in wireless systems Kontribuutioita aika- ja taajuussynkronointiin langattomissa järjestelmissä |
Author(s): | Koivisto, Tommi |
Date: | 2015 |
Language: | en |
Pages: | 138 + app. 64 |
Department: | Signaalinkäsittelyn ja akustiikan laitos Department of Signal Processing and Acoustics |
ISBN: | 978-952-60-6333-1 (electronic) 978-952-60-6332-4 (printed) |
Series: | Aalto University publication series DOCTORAL DISSERTATIONS, 114/2015 |
ISSN: | 1799-4942 (electronic) 1799-4934 (printed) 1799-4934 (ISSN-L) |
Supervising professor(s): | Koivunen, Visa, Academy Prof., Aalto University, Department of Signal Processing and Acoustics, Finland |
Thesis advisor(s): | Koivunen, Visa, Academy Prof., Aalto University, Department of Signal Processing and Acoustics, Finland |
Subject: | Electrical engineering |
Keywords: | synchronization, OFDM, spread spectrum, MIMO, synkronointi, hajaspektritekniikka |
Archive | yes |
OEVS yes | |
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Abstract:Aika- ja taajuussynkronointi on oleellinen toiminto kaikissa langattomissa vastaanottimissa ja järjestelmissä. Nykyaikaisissa langattomissa järjestelmissä, kuten 4G- sekä tulevissa 5G-järjestelmissä, uudet langattomat teknologiat asettavat uusia haasteita myös synkronoinnille. Uusia synkronointiratkaisuja tarvitaan erityisesti moniantennijärjestelmissä sekä yhteis-toiminnallisissa järjestelmissä. Joissain sovelluksissa, esimerkiksi häiriönpoistossa ja kognitiivisissa radioissa, synkronointi on tehtävä vastaanottimessa tuntematta kaikkia signaalin lähetysparametreja, jolloin synkronointi on erityisen haastavaa. Myös sotilas-sovelluksissa, esimerkiksi tiedusteluvastaanottimien synkronoinnissa, on vastaavia tilanteita. |
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Parts:[Publication 1]: T. Koivisto and V. Koivunen. Blind despreading and synchronization of short-code DS-CDMA signals. In 39th Annual Conference on Information Sciences and Systems, Baltimore, MD, USA, March 2005.[Publication 2]: T. Koivisto and V. Koivunen. Blind despreading of short-code DS-CDMA signals in asynchronous multi-user systems. Signal Processing, vol. 87, no. 11, pp. 2560-2568, November 2007. DOI: 10.1016/j.sigpro.2007.04.012 View at Publisher [Publication 3]: T. Koivisto and V. Koivunen. Diversity transmission for correlation-based slot synchronization with noncoherent combining . In IEEE 69th Vehicular Technology Conference, Barcelona, Spain, September 2009. DOI: 10.1109/VETECS.2009.5073509 View at Publisher [Publication 4]: T. Koivisto and V. Koivunen. Diversity transmission of synchronization sequences in MIMO systems. IEEE Transactions on Wireless Communications, vol. 11, no. 11, pp. 4048-4057, November 2012. DOI: 10.1109/TWC.2012.090312.112258 View at Publisher [Publication 5]: T. Koivisto and V. Koivunen. Impact of time and frequency offsets on cooperative multi-user MIMO-OFDM systems. In IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, Tokyo, Japan, pp. 3119-3123, September 2009. DOI: 10.1109/PIMRC.2009.5450310 View at Publisher [Publication 6]: T. Koivisto, T. Kuosmanen and T. Roman. Estimation of time and frequency offsets in LTE coordinated multi-point transmission. In IEEE 78th Vehicular Technology Conference, Las Vegas, NV, USA, September 2013. DOI: 10.1109/VTCFall.2013.6692197 View at Publisher [Publication 7]: T. Koivisto and V. Koivunen. Low complexity estimation of multiple frequency offsets using optimized training signals. In IEEE 11th International Symposium on Spread Spectrum Techniques and Applications, Taichung, Taiwan, October 2010. DOI: 10.1109/ISSSTA.2010.5653223 View at Publisher |
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