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A low complexity antenna diversity receiver for OFDM based systems
KTH, Tidigare Institutioner, Signaler, sensorer och system. (Radio Communication Systems Group)ORCID-id: 0000-0001-9697-9978
2001 (Engelska)Ingår i: IEEE International Conference on Communications, 2001, s. 1147-1151Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A low complexity antenna diversity architecture with a new combining technique suitable for orthogonal frequency division (OFDM) based systems is introduced in this paper. For a two branch antenna diversity, this structure requires only one FFT at the receiver and allows optimum maximum ratio combining. For systems with a higher number of antennas, the number of required FFTs when using such technique is reduced by half as compared to the conventional case where a different FFT is used for each receive antenna. As a result a considerable reduction in processing complexity is obtained especially for systems with high number of subcarriers. This method can also be seen as a way of increasing the number of antennas in OFDM transceivers without any major complexity increase. Thus, a considerable increase in diversity gain can be achieved

Ort, förlag, år, upplaga, sidor
2001. s. 1147-1151
Nyckelord [en]
Algorithms, Bandwidth, Bit error rate, Communication channels (information theory), Diversity reception, Fast Fourier transforms, Gain control, Orthogonal frequency division multiplexing, Transceivers
Nationell ämneskategori
Kommunikationssystem
Forskningsämne
SRA - Informations- och kommunikationsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-49733OAI: oai:DiVA.org:kth-49733DiVA, id: diva2:460182
Konferens
International Conference on Communications (ICC2001); Helsinki; 11 June 2000 through 14 June 2000
Anmärkning
QC 20111130Tillgänglig från: 2011-11-29 Skapad: 2011-11-29 Senast uppdaterad: 2011-11-30Bibliografiskt granskad

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