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This paper describes the design of a serial-link transceiver that supports various communication standards from 1.25 to 12.5Gb/s, implemented in 40nm CMOS technology. Both DC and AC coupling mode can be provided by the receiver, in which a wide range PI-based CDR is also proposed. The transceiver utilizes a 3-tap FFE, a 2-stage CTLE and an adaptive 2-tap DFE to achieve the compensation for a Nyquist...
The 10Gbase-KR protocol is widely used to accomplish the high speed data conversion in the Ethernet area. This paper presents a design of the critical controller in the physical coding sublayer based on the 10Gbase-KR. In order to satisfy the demand of the high speed data conversion, the scrambler and descrambler are specially designed to work in a parallel mode. The post-synthesis simulation results...
A novel aperture error reduction technique for subrange successive approximation register analog-to-digital converter (SAR ADC) is presented in this paper. By reusing capacitors of flash ADC during fine conversion phase, thermometer coarse capacitors belonging to CDAC can be removed from the circuit. Compared with the conventional subrange SAR ADC without front-end T/H, this technique can minimize...
In order to improve the efficiency of multi-resolution modeling and simulation, Base Object Model (BOM) based multi-resolution model for federated simulation is proposed in this paper. The whole process includes conceptual modeling design, component design, component assembly and federal simulation. BOM-based conceptual models are divided into two categories: basic BOM and the Resolution Related BOM...
In this paper, a 10Gbps PI-based CDR circuit is presented in 65nm CMOS technology. The circuit is composed of a phase selector, a phase interpolator, a sample unit, a synchronize unit, a phase detector, and CDR logic. Half-rate clock is adopted to lessen the problems caused by high speed clocks and reduce power. The simulated worst phase step of phase interpolator is 26.7% larger than the average...
Game theory-based cognitive radio dynamic spectrum allocation, is one of the hot researches of the field of cognitive radio. Taking into account the differences in the spectrum, using a Cournot game model, and adding the spectral similarity matrix to the original pricing function, a new utility function that makes the spectrum allocation more close to the actual network environment is proposed. Simulation...
The critical security problem in ITS information network is network availability. It is important to avoid flow attack against network availability. This paper analyzes first several current IP-track technologies to find attack route, then analyzes and evaluates the ldquovector edge router samplingrdquo (RVES) method proposed by Chinese experts lately. We developed a prototype system based on RVES...
This paper proposes a digital background calibration algorithm for pipelined analog-to-digital converters (ADCs). The algorithm doesn't modify pipeline stages and only needs simple calibration logic. Based on the analysis of the output codes, the algorithm estimates the bit weight of each stage and calculates the outputs. To verify the algorithm, a 13-bit pipelined ADC with 1.5-bit/stage architecture...
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