Run-Time Power Management for Low and Medium Bit-Rate Digital Receivers

This chapter focuses on run-time power management, which is one of the most efficient low-power strategies, applicable at various levels of abstraction of the unified meta flow. Two run-time power management techniques applicable for the design of low and medium bit-rate digital modems are introduced. Specifically, an event-driven power management methodology and a dynamic power management technique based on frequency scaling, are presented for custom processors. They are both situated at the operation/instruction concurrency level in the unified design flow of chapter 2. The main test-vehicle is a real-life design, namely a DECT receiver developed for the purposes of the LPGD project in the European Low Power Initiative. The experimental results prove that the application of the proposed techniques introduces significant power savings.

[1]  Massoud Pedram,et al.  High-level power modeling, estimation, and optimization , 1998, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[2]  Andreas F. Molisch,et al.  Error floor of unequalized wireless personal communications systems with MSK modulation and training-sequence-based adaptive sampling , 1997, IEEE Trans. Commun..

[3]  Luca Benini,et al.  Automatic synthesis of low-power gated-clock finite-state machines , 1996, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[4]  Marios C. Papaefthymiou,et al.  Precomputation-based sequential logic optimization for low power , 1994, IEEE Trans. Very Large Scale Integr. Syst..

[5]  Luca Benini,et al.  Transformation and synthesis of FSMs for low-power gated-clock implementation , 1995, ISLPED '95.

[6]  Jan M. Rabaey,et al.  Early power exploration—a World Wide Web application , 1996, DAC '96.

[7]  Edward A. Lee,et al.  Memory management for dataflow programming of multirate signal processing algorithms , 1994, IEEE Trans. Signal Process..

[8]  Grigorios Kalivas,et al.  A low complexity baseband receiver for direct conversion DECT-based portable communication systems , 1998, ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384).

[9]  Massoud Pedram,et al.  Dynamic power management based on continuous-time Markov decision processes , 1999, DAC '99.

[10]  Luca Benini,et al.  System-level power optimization: techniques and tools , 1999, Proceedings. 1999 International Symposium on Low Power Electronics and Design (Cat. No.99TH8477).

[11]  Luca Benini,et al.  Dynamic power management - design techniques and CAD tools , 1997 .

[12]  Allen C.-H. Wu,et al.  A predictive system shutdown method for energy saving of event-driven computation , 1997, ICCAD 1997.

[13]  Luca Benini,et al.  Saving power by synthesizing gated clocks for sequential circuits , 1994, IEEE Design & Test of Computers.

[14]  Jan M. Rabaey,et al.  Low-energy embedded FPGA structures , 1998, Proceedings. 1998 International Symposium on Low Power Electronics and Design (IEEE Cat. No.98TH8379).

[15]  Sharad Malik,et al.  Guarded evaluation: pushing power management to logic synthesis/design , 1995, ISLPED '95.

[16]  Paul E. Landman,et al.  Low-power architectural design methodologies , 1995 .

[17]  Keshab K. Parhi,et al.  Synthesis of folded pipelined architectures for multirate DSP algorithms , 1998, IEEE Trans. Very Large Scale Integr. Syst..

[18]  Luca Benini,et al.  System-level power optimization: techniques and tools , 1999, ISLPED '99.

[19]  Mani B. Srivastava,et al.  Predictive system shutdown and other architectural techniques for energy efficient programmable computation , 1996, IEEE Trans. Very Large Scale Integr. Syst..

[20]  Luca Benini,et al.  Policy optimization for dynamic power management , 1999, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[21]  Jerry D. Gibson,et al.  The Communications Handbook , 2002 .

[22]  Luca Benini,et al.  Dynamic Power Management , 1998 .

[23]  Dimitrios Soudris,et al.  A methodology for the behavioral-level event-driven power management of digital receivers , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[24]  Thanos Stouraitis,et al.  The VLSI implementation of a baseband receiver for DECT-based portable applications , 1999, ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349).

[25]  K. Hirade,et al.  GMSK Modulation for Digital Mobile Radio Telephony , 1981, IEEE Trans. Commun..

[26]  P. Vaidyanathan.  Multirate Systems And Filter Banks , 1992 .