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A NOVEL APPROACH FOR LOWER POWER DESIGN IN TURBO CODING SYSTEM

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Author(s): Dayadi.Lakshmaiah | Dr.M.V.Subramanyam | Dr.K.Sathaya Prasad

Journal: International Journal of VLSI Design & Communication Systems
ISSN 0976-1527

Volume: 2;
Issue: 2;
Start page: 16;
Date: 2011;
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Keywords: low power consumption | Turbo Encoder | Turbo Decoder | Power Ooptimization | AreaOptimization

ABSTRACT
Low Power is an extremely important issue for future mobile communication systems; Thefocus of this paper is to implementat turbo codes for low power solutions. The effect on performance due tovariation in parameters like frame length, number of iterations, type of encoding scheme and type of theinterleave in the presence of additive white Gaussian noise is studied with the floating point model. Inorder to obtain the effect of quantization and word length variation, a fixed point model of the applicationis also developed.. The application performance measure, namely bit-error rate (BER) is used as a designconstraint while optimizing for power and area coverage. Low power Optimization is Performed onImplementation levels by the use of Voltage scaling. With those Techniques we can reduced the power98.5%and Area(LUT) is 57% and speed grade is Increased .This type of Power maneger is proposed andimplemented based on the timing details of the turbo decoder in the VHDL model.
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