Acta Metallurgica Sinica(English letters) ›› 2008, Vol. 15 ›› Issue (3): 19-23.doi:

• Wireless • Previous Articles     Next Articles

Cross-layer combining of power control and adaptive modulation with truncated ARQ for cognitive radios

CHENG Shi-lun, YANG Zhen   

  1. The Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2007-11-29 Revised:1900-01-01 Online:2008-09-30


To maximize throughput and to satisfy users’ requirements in cognitive radios, a cross-layer optimization problem combining adaptive modulation and power control at the physical layer and truncated automatic repeat request at the medium access control layer is proposed. Simulation results show the combination of power control, adaptive modulation, and truncated automatic repeat request can regulate transmitter powers and increase the total throughput effectively.

Key words:

cognitive radio;truncated ARQ;power control;adaptive modulation;cross-layer design