Title :
On the robustness of multiuser diversity in diversity combine systems with channel estimation error
Author :
Tang, Dong ; Lv, Mingxia ; Liu, Banhao ; Huang, Gaofei
Author_Institution :
Sch. of Mech. & Electr. Eng., Guangzhou Univ., Guangzhou, China
Abstract :
The robustness differences of multiuser maximum ratio combining (MRC), MIMO-MRC and optimum combining (OC) systems with imperfect channel state information are analyzed. Using the multiuser average capacity difference CDR with channel estimation error, the robustness of the three systems are illustrated in a flat Rayleigh fading channel with multiple interferers. Performance results show that OC system always outperforms the MIMO-MRC and MRC systems when there are no co-channel interferences, whereas MIMO-MRC and MRC outperform the OC system when there are multiple co-channel interferences.
Keywords :
MIMO communication; Rayleigh channels; channel estimation; cochannel interference; diversity reception; MIMO-MRC; Rayleigh fading channel; channel estimation error; channel state information; cochannel interference; diversity combine systems; maximum ratio combining; multiuser diversity; Array signal processing; Base stations; Channel estimation; Diversity reception; Fading; Interference; Performance analysis; Robustness; Signal to noise ratio; Transmitters; MIMO-MRC; channel estimation error; maximum ratio combining (MRC); multiuser diversity; optimal combining(OC);
Conference_Titel :
Future Information Networks, 2009. ICFIN 2009. First International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5158-6
Electronic_ISBN :
978-1-4244-5159-3
DOI :
10.1109/ICFIN.2009.5339564
