Title :
Soft Information Aided ML Joint Frame Synchronization and Channel Estimation for Downlink MC-CDMA in the Presence of Narrowband Interference
Author :
Marey, Mohamed ; Guenach, Mamoun ; Simoens, Frederik ; Steendam, Heidi
Author_Institution :
Dept. of TELIN, Ghent Univ.
Abstract :
Spectrum-overlay scenarios for wideband multi-carrier (MC) systems bring new technical challenges that must be considered during the system design. In such a scenario, the receiver has to perform actions, such as channel estimation and synchronization, in the presence of possibly strong in-band interference. In this paper, we modify the iterative maximum likelihood joint frame synchronization and channel estimation algorithm for downlink MC-CDMA presented in (M. Guenach et al., 2006) to have better performance in the presence of narrowband interference. The performance of the modified algorithm is verified through computer simulations and compared with the original one.
Keywords :
4G mobile communication; broadband networks; channel estimation; code division multiple access; iterative methods; maximum likelihood estimation; mobile radio; radio links; radiofrequency interference; synchronisation; channel estimation algorithm; downlink MC-CDMA; in-band interference; iterative maximum likelihood joint frame synchronization; narrowband interference; soft information aided ML joint frame synchronization; wideband multi-carrier systems; Bandwidth; Channel estimation; Digital modulation; Downlink; Frequency synchronization; Interference; Iterative algorithms; Maximum likelihood estimation; Multicarrier code division multiple access; Narrowband;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.450
