Online digital offset mismatch compensation for high-speed time-interleaved ADC in real-time optical OFDM receiver

Digital offset compensation of time-interleaved ADC using random chopper sampling

Digital Time-Interleaved ADC Mismatch Error Correction Embedded into High-Performance Digitizers

Achievable resolution and spurious performance of analog-to-digital converters (ADCs) are tightly connected to the maximum sampling frequency of the device. Today, in early 2013, sampling rates of commercially available 16-bit monolithic, single-core (non-interleaved) ADCs are limited to 250 MS/s while 14-bit ADCs can be found up to 400 MS/s. The corresponding number for a single-core 12-bit AD...

Channel linearity mismatch effects in time-interleaved ADC systems

A time-interleaved ADC system is an effective way to implement a high-sampling-rate ADC with relatively slow circuits. In the system, several channel ADCs operate at interleaved sampling times as if they were effectively a single ADC operating at a much higher sampling rate. Mismatches among channel ADCs degrade SNR and SFDR of the ADC system as a whole, and the effects of offset, gain and band...

Scalable Mismatch Correction for Time-interleaved Analog-to-Digital Converters in OFDM Reception1

Realization of all-digital baseband receiver processing for multi-Gigabit communication requires analog-to-digital converters (ADCs) of sufficient rate and output resolution. A promising architecture for this purpose is the time-interleaved ADC (TI-ADC), in which L “sub-ADCs” are employed in parallel. However, the gain, timing and voltage-offset mismatches between the sub-ADCs, if left uncompen...

High-speed All- Optical Time Division Multiplexed Node

In future high-speed self-routing photonic networks based on all-optical time division multiplexing (OTDM) it is highly desirable to carry out packet switching, clock recovery and demultplexing in the optical domain in order to avoid the bottleneck due to the optoelectronics conversion. In this paper we propose a self-routing OTDM node structure composed of an all-optical router and demultiplex...