Title :
Peak power analysis of MC-CDMA employing Golay complementary sequences
Author :
Dong, Lin ; Yu, Nam Yul
Abstract :
Golay complementary sequences are a good solution to reduce the high peak-to-average power ratio (PAPR) of multicarrier communication systems. In this paper, we present a simple but novel technique to develop theoretical PAPR bounds of downlink MC-CDMA system using Golay complementary sequences for spreading and coding. The developed PAPR bounds are independent of the spreading factor in uncoded MC-CDMA. Furthermore, they have no dependency on the number of spreading processes as well as the spreading factor in coded MC-CDMA. Simulation results demonstrate that the theoretical bounds are well followed by 99.9% PAPRs which are also independent of spreading factors (for uncoded and coded cases), and the number of spreading processes (for coded case only). Practically, the independency gives us a useful insight for peak power control in MC-CDMA employing Golay complementary sequences.
Keywords :
Golay codes; code division multiple access; Golay complementary sequences; downlink MC-CDMA system; multicarrier communication systems; peak power analysis; peak power control; peak-to-average power ratio; spreading and coding; spreading factor; spreading processes; theoretical PAPR bounds; uncoded MC-CDMA; Downlink; Encoding; Modulation; Multicarrier code division multiple access; Peak to average power ratio; Simulation;
Conference_Titel :
Information Theory (CWIT), 2011 12th Canadian Workshop on
Conference_Location :
Kelowna, BC
Print_ISBN :
978-1-4577-0743-8
DOI :
10.1109/CWIT.2011.5872119