Jayaram Natarajan

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In this paper, a soft error resilient video encoder design is presented. The design uses the inherent architecture of modern video encoders as a basis for building a checksum based error detection mechanism. Modern video encoders use previously coded data in a video sequence as a reference to encode future data. Data prediction is efficient in terms of(More)
In this research we study how power can be saved in the baseband processor of an OFDM transceiver from the knowledge of an end application to which the transmitted or received data is applied. The specific applications that we study are image and video transmission across a wireless link. It is assumed that edge detection (image) and object tracking (video)(More)
In this paper, a content aware, low power video encoder design is presented in which the algorithms and hardware are co-optimized to adapt concurrently to video content in real-time. Natural image statistical models are used to form spatiotemporal predictions about the content of future frames. A key innovation in this work is that that the predictions are(More)
Voltage overscaling for power reduction in RF systems has been limited by the need to maintain sufficient overscaling guard bands to ensure that minimum signal quality requirements of the end to end communication link are met. In this paper, we propose error control mechanisms at the symbol (probabilistic symbol remapping) and bit levels (code based(More)
Exhaustive speed testing of all the cores under extreme inter and intra-die process variations in a large chip multi processor (CMP) is expensive in terms of test time and may not guarantee full CMP functionality due to lack of coverage of timing failures induced by second-order effects such as cross talk, power/ground bounce and speed-limiting design bugs(More)
In wireless multimedia systems, significant power is consumed in processing image/video content This research looks specifically at the energy cost of wireless image/video transport focusing on image quality as an end metric. The quality of received image/video content depends on the effective bit error rate of the communication channel and the amount by(More)
Modern microprocessor pipelines experience timing uncertainties due to manufacturing process variations, thermal variations, supply voltage droop and data-dependent path delays. This leads to power and/or performance inefficiencies in current timing guard banding methods especially when pipeline stages are operating well under their critical path timing(More)
Mixed-signal modules are being used extensively in real-time cyber-physical system design. Such real-time systems experience large changes in workload. In addition, due to the use of aggressively scaled silicon technologies, the nominal performances of ICs used in the design can vary significantly from IC to IC and within each IC from one corner of the IC(More)
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