Title :
A level-crossing sampling scheme for A/D conversion
Author :
Sayiner, N. ; Sorensen, H.V. ; Viswanathan, T.R.
Author_Institution :
Pennsylvania Univ., Philadelphia, PA, USA
fDate :
4/1/1996 12:00:00 AM
Abstract :
A sampling scheme that is based on multiple level-crossings is presented. This scheme generates samples of the input signal that are nonuniformly spaced in time by recording the time instants at which the signal crosses any of the fixed quantization levels. The nonuniform sample sequence is transformed to uniform samples by polynomial interpolation. The resolution is further increased by employing decimation. Various trade-offs involved in terms of speed, resolution and hardware complexity are discussed
Keywords :
interpolation; quantisation (signal); A/D conversion; decimation; fixed quantization levels; hardware complexity; input signal samples; level-crossing sampling scheme; multiple level-crossings; polynomial interpolation; time instants; Bandwidth; Dynamic range; Hardware; Interpolation; Polynomials; Quantization; Sampling methods; Signal generators; Signal processing; Signal resolution;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
