In this paper, an 8-channel closed-loop neural-prosthetic SoC is presented for real-time intracranial EEG (iEEG) acquisition, epileptic seizure detection, and adaptive feedback stimulation control. The SoC is composed of 8 energy-efficient analog front-end amplifiers (AFEAs), a 10b delta-modulated SAR ADC (DMSAR ADC), a configurable bio-signal processor… (More)
—This paper presents a design methodology for power and area minimization of flexible FFT processors. The methodology is based on the power-area tradeoff space obtained by adjusting algorithm, architecture, and circuit variables. Radix factorization is the main technique for achieving high energy efficiency with flexibility, followed by architecture… (More)
Ultra-wideband (UWB) communication is a new wireless technology that transmits data over a wide bandwidth for low-power and short-range communication. Of the different proposals for UWB, impulse-radio based technology uses nano-second base-band pulses to achieve spread spectrum transmission . Impulse transmission eliminates the need for up/down… (More)
Epilepsy is one of the most common neurological disorders. Around 1% of the world's population is affected, and nearly 25% of the patients cannot be treated by available therapies. Recently, seizure-triggered feedback electrical stimulation has been proved to effectively suppress pathological brain activities , but devices with accurate detection and… (More)
OBJECTIVE Around 1% of the world's population is affected by epilepsy, and nearly 25% of patients cannot be treated effectively by available therapies. The presence of closed-loop seizure-triggered stimulation provides a promising solution for these patients. Realization of fast, accurate, and energy-efficient seizure detection is the key to such implants.… (More)
Index Terms—CMOS digital integrated circuits, cognitive radio (CR), power and area minimization, wideband spectrum sensing.
—This paper presents a hybrid soft-output MIMO detector that searches reliable soft-information in both determin-istic and probabilistic ways. The fixed-complexity sphere detector (FSD) is first applied to provide near maximum-likelihood (ML) solutions. The solutions are next used to initialize the Markov Chain Monte Carlo (MCMC) detector that uses parallel… (More)