Efficient receiver design for OFDMA systems with subband carrier allocation strategy

Maliatsos, K; Adamis, A; Constantinou, P

dc.contributor.author	Maliatsos, K	en
dc.contributor.author	Adamis, A	en
dc.contributor.author	Constantinou, P	en
dc.date.accessioned	2014-03-01T02:45:15Z
dc.date.available	2014-03-01T02:45:15Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32228
dc.subject	Frequency synchronization and correction	en
dc.subject	OFDMA	en
dc.subject	Polyphase filters	en
dc.subject.other	Carrier allocation	en
dc.subject.other	Carrier offset	en
dc.subject.other	Computational workload	en
dc.subject.other	Doppler shifts	en
dc.subject.other	Frequency offsets	en
dc.subject.other	Frequency synchronization and correction	en
dc.subject.other	Mobile users	en
dc.subject.other	Multi-rate processing	en
dc.subject.other	OFDMA	en
dc.subject.other	OFDMA systems	en
dc.subject.other	Performance degradation	en
dc.subject.other	Polyphase filters	en
dc.subject.other	Receiver complexity	en
dc.subject.other	Receiver design	en
dc.subject.other	Sub-band	en
dc.subject.other	Sub-carriers	en
dc.subject.other	Synchronization error	en
dc.subject.other	Up-link transmissions	en
dc.subject.other	Degradation	en
dc.subject.other	Frequency allocation	en
dc.subject.other	Frequency division multiple access	en
dc.subject.other	Global system for mobile communications	en
dc.subject.other	Multiple access interference	en
dc.subject.other	Radio interference	en
dc.subject.other	Signal processing	en
dc.subject.other	Synchronization	en
dc.title	Efficient receiver design for OFDMA systems with subband carrier allocation strategy	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/SPAWC.2008.4641575	en
heal.identifier.secondary	http://dx.doi.org/10.1109/SPAWC.2008.4641575	en
heal.identifier.secondary	4641575	en
heal.publicationDate	2008	en
heal.abstract	Time and frequency offsets can cause severe degradation in the performance of any OFDM-based System. Therefore synchronization procedures are necessary for the proper function of a receiver. In OFDMA, where different users share the available subcarriers, synchronization becomes an arduous task. Synchronization errors as far as the uplink transmission is concerned may cause intolerable Multiple Access Interference (MAI) as the signals are produced by different mobile users and propagate through different channels with various Carrier Offsets and Doppler shifts. The receiver must estimate a number of parameters and compensate for the produced intercarrier (ICI) and intersymbol (ISI) interference. These tasks cause massive increase of the computational workload required by the receiver. However, with the use of proper filtering and multirate processing the receiver complexity can be contained with no significant performance degradation. ©2008 IEEE.	en
heal.journalName	IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC	en
dc.identifier.doi	10.1109/SPAWC.2008.4641575	en
dc.identifier.spage	86	en
dc.identifier.epage	90	en