Synchronization of a TDMA-OFDM frequency hopping system
1998 (English)In: Pathway to a global wireless revolution: VTC '98, 48th IEEE Vehicular Technology Conference, Westin Hotel, Ottawa, Canada, 18 - 21 May 1998, Piscataway, NJ: IEEE Communications Society, 1998, Vol. 2, 1290-1294 p.Conference paper (Refereed)
In this paper we present a Time Division Multiple Access-Orthogonal Frequency Division Multiplexing (TDMA-OFDM)-based radio interface proposal for the Universal Mobile Telecommunication System (UMTS). We focus on synchronization and present an implementable algorithm for the tracking of the mobiles' time and frequency offsets at the base station in the uplink. This algorithm is based on recently developed estimation methods that use redundancy introduced by the cyclic prefix. A modified Maximum Likelihood (ML) estimator for the Additive White Gaussian Noise (AWGN) channel is used to meet both implementational requirements and performance requirements for frequency-selective fading multiuser environments. Simulation results for a typical UMTS mobile channel environment show that the uncoded symbol error rate of a coherently modulated system using our synchronization scheme is virtually indistinguishable from that of a system with no time and frequency offset.
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 1998. Vol. 2, 1290-1294 p.
Research subject Signal Processing
IdentifiersURN: urn:nbn:se:ltu:diva-32457DOI: 10.1109/VETEC.1998.686447Local ID: 6f5cff00-dfc1-11dc-9e29-000ea68e967bISBN: 0-7803-4320-4OAI: oai:DiVA.org:ltu-32457DiVA: diva2:1005691
Vehicular Technology Conference : 02/05/1998 - 02/05/1998
Godkänd; 1998; 20080220 (ysko)2016-09-302016-09-30Bibliographically approved