00000nam 2200000zi 4500 9.891654 CaOODSP 20221107172937 m o d f cr mn||||||||| 200921s1998 onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre Co24-3/8-1998-1E-PDF Willink, Tricia Janet, 1966- author. Optimisation and performance evaluation of OFDM transmission / T.J. Willink, P.J. Vigneron and P.H. Wittke. Ottawa : Communications Research Centre = Centre de recherches sur les communications, 1998. 1 online resource (ix, 48 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC technical note ; no. 98-001 "Terrestrial Wireless Systems." "April 22, 1998." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references (pages 45-46). "In this technical note, the optimisation of OFDM transmission over a linear dispersive channel is considered. The optimum data and power assignments to the subcarriers are derived for both the conventional error probability criterion, and a new criterion based on the normalised mean-square error. The assignments and algorithm hold for channels where performance is degraded by additive noise, intersymbol and interchannel interference. Lower bounds on throughput are derived and are used to compare OFDIVI performance with conventional single carrier QAM with both linear and decision feedback equalisation. It is shown that OFDM transmission can provide a significant improvement at low and intermediate channel SNRs. The case of a multiuser multicarrier system is considered, in which interference from adjacent users affects the OFDM allocations. A sub-optimal, but more practical, approach to maximising OFDM performance is presented"--Abstract, page iii. Issued also in print format. Includes abstracts in English and French. Orthogonal frequency division multiplexing. Multiplexage par répartition orthogonale de la fréquence. Communications Research Centre (Canada), issuing body. CRC technical note ; no. 98-001. (CaOODSP)9.882494 PDF 1.69 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-8-1998-1-eng.pdf