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A method of signaling precoder information for dynamical spectrum shaping
Huawei Technologies Sweden.
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0001-8647-436X
2010 (engelsk)Inngår i: 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM 2010): Chengdu City, China, 23 - 25 September 2010, Piscataway, NJ: IEEE Communications Society, 2010, artikkel-id 5600884Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this paper, we propose a method for signalling precoder information in cognitive radio networks employing precoded OFDM. In this way, radio transmitters in said cognitive radio networks change their spectral occupancy from one time to another, characterized by the steps of 1. The network determines a suitable precoder uniquely characterized by a codebook index from a finite codebook of precoders, said codebook being known at both the network-side and by the mobile units. 2. The network informs the relevant mobile units about the precoder to use by broadcasting the codebook index Meanwhile, we propose several measurement based optimization methods for spectrum shaping to determine the suitable precoder from, for instance, a database of interference information, or feedback information from UEs about their current interference and noise environment, then notify the precoder information over a CPC. We could use a codebook of precoders each being designed for a certain radio scenario, this precoder jointly considering noise level and frequency band. We could use a codebook with precoders forcing the OFDM signal to be N-continuous and where said codebook index is directly related to the continuity order N. We also could use a codebook with precoders forcing the spectrum of the OFDM signal to be zero at pre-defined frequencies f 0...f M, and where said codebook index is directly related to the said frequencies. f 0...f M.

sted, utgiver, år, opplag, sider
Piscataway, NJ: IEEE Communications Society, 2010. artikkel-id 5600884
HSV kategori
Forskningsprogram
Signalbehandling
Identifikatorer
URN: urn:nbn:se:ltu:diva-39313DOI: 10.1109/WICOM.2010.5600884Lokal ID: dfe9a50e-2f4f-40aa-8bb4-d560b88de916ISBN: 978-1-4244-3708-5 (tryckt)OAI: oai:DiVA.org:ltu-39313DiVA, id: diva2:1012823
Merknad
Godkänd; 2010; 20140519 (andbra)Tilgjengelig fra: 2016-10-03 Laget: 2016-10-03 Sist oppdatert: 2017-11-25bibliografisk kontrollert

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