Title :
Code Aided Joint Frame Synchronization and Channel Estimation for Uplink MC-CDMA in the Presence of Narrowband Interference
Author :
Marey, Mohamed ; Guenach, Mamoun ; Steendam, Heidi
Author_Institution :
DIGCOM Res. group, Ghent Univ., Ghent
Abstract :
Spectrum-overlay scenarios for wide-band multi-carrier (MC) systems bring new technical challenges along that must be considered during the system design. In such scenarios, 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 investigate the impact of digitally modulated narrowband interference (NBI) on the iterative algorithm for joint channel estimation and frame synchronization as proposed in (Guenach et al., 2008) for uplink MC-CDMA. Moreover, we modify the algorithm to have better performance in the presence of NBI. The performance of the modified algorithm taking into account the statistics of NBI is verified through computer simulations and compared with the results from (Guenach et al., 2008).
Keywords :
channel estimation; code division multiple access; iterative methods; radiofrequency interference; code aided joint frame synchronization; digitally modulated narrowband interference; inband interference; iterative algorithm; joint channel estimation; multicarrier code division multiple access; spectrum-overlay scenarios; uplink MC-CDMA; wide-band multicarrier systems; Base stations; Channel estimation; Frequency synchronization; Interference; Iterative algorithms; Multiaccess communication; Multicarrier code division multiple access; Narrowband; Neodymium; OFDM;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.241
