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CISS
2007
IEEE
14 years 2 months ago
A Practical Hybrid-ARQ Protocol Using Noncoherent Orthogonal Modulation
Abstract— This paper considers hybrid-ARQ under the constraints of noncoherent orthogonal modulation and hard-decision decoding. Information theoretic bounds on the throughput fo...
Syed Amaar Ahmad, Matthew C. Valenti
ISCAS
2007
IEEE
105views Hardware» more  ISCAS 2007»
14 years 1 months ago
A 12-bit@40MS/s Gm-C Cascade 3-2 Continuous-Time Sigma-Delta Modulator
− This paper reports the transistor-level design of a 130-nm CMOS continuous-time cascade ΣΔ modulator. The modulator topology, directly synthesized in the continuous-time doma...
Ramon Tortosa Navas, Antonio Aceituno, José...
ISCAS
2007
IEEE
80views Hardware» more  ISCAS 2007»
14 years 1 months ago
An I/Q Channel Time-Interleaved Band-Pass Sigma-Delta Modulator for a Low-IF Receiver
—This paper proposes a multiplexing scheme to realize an I/Q channel time-interleaved (TI) band-pass sigmadelta modulator (BPSDM) that shares OTAs to minimize power consumption a...
Minho Kwon, Gunhee Han
IROS
2006
IEEE
127views Robotics» more  IROS 2006»
14 years 1 months ago
A 2 DoF Servomotor-based Module for Pipe Inspection Modular Micro-robots
— A 2 degrees of freedom module for pipe inspection modular micro-robots based on servomotors is presented in this article. A mechanical and electrical description of the module ...
Alberto Brunete, Ernesto Gambao, Jose Emilio Torre...
ISCAS
2006
IEEE
80views Hardware» more  ISCAS 2006»
14 years 1 months ago
Fundamental limitations of continuous-time delta-sigma modulators due to clock jitter
We examine noise due to clock jitter in single-loop low pass continuous-time delta-sigma modulators employing NRZ feedback DACs. Using the discrete-time version of the Bode sensit...
K. Reddy, S. Pavan