Power Management for Cognitive Radio Platforms

This paper discusses how the cognitive radio concept can be extended to allow the system not only to manage shared resources such as spectrum, but to use this knowledge to optimize the overall system power consumption. We introduce a case study of video over wireless via a 3G WCDMA modem connected to an H.264 decoder. We show that by utilizing knowledge about the communication channel, a savings of more than 20% of the overall system power is possible while maintaining a required quality of service.

[1]  Aggelos K. Katsaggelos,et al.  Error resilient video coding techniques , 2000, IEEE Signal Process. Mag..

[2]  Ahmed M. Eltawil,et al.  Design and Analysis of Low Power Image Filters Toward Defect-Resilient Embedded Memories for Multimedia SoCs , 2006, Asia-Pacific Computer Systems Architecture Conference.

[3]  山本 英明,et al.  A 160mW, 80nA Standby, MPEG-4 Audiovisual LSI with 16Mb Embedded DRAM and a 5GOPS Adaptive Post Filter(VSLI一般(ISSCC'03関連特集)) , 2003 .

[4]  Rouwaida Kanj,et al.  Cross Layer Error Exploitation for Aggressive Voltage Scaling , 2007, 8th International Symposium on Quality Electronic Design (ISQED'07).

[5]  A.P. Chandrakasan,et al.  Ultra-dynamic Voltage scaling (UDVS) using sub-threshold operation and local Voltage dithering , 2006, IEEE Journal of Solid-State Circuits.

[6]  K. Ohmori,et al.  A 160 mW, 80 nA standby, MPEG-4 audiovisual LSI with 16 Mb embedded DRAM and a 5 GOPS adaptive post filter , 2003, 2003 IEEE International Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC..

[7]  B. Daneshrad,et al.  Dual antenna UMTS mobile station transceiver ASIC for 2 Mb/s data rate , 2003, 2003 IEEE International Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC..

[8]  Vinko Erceg.  IEEE P802.11 Wireless LANs TGn Channel Models , 2004 .

[9]  V. Erceg,et al.  TGn Channel Models , 2004 .

[10]  Yuan Taur,et al.  Fundamentals of Modern VLSI Devices , 1998 .

[11]  Joseph Mitola,et al.  Cognitive radio: making software radios more personal , 1999, IEEE Wirel. Commun..

[12]  Anantha Chandrakasan,et al.  Embedded power supply for low-power DSP , 1997, IEEE Trans. Very Large Scale Integr. Syst..