Pseudorandom Direct Sampler for Non-Uniform Sub-sampling Architecture in a Multistandard Receiver
|
| Title | Pseudorandom Direct Sampler for Non-Uniform Sub-sampling Architecture in a Multistandard Receiver |
| Authors | |
| Abstract | In this paper, a Non-Uniform Sampling (NUS) technique for down-conversion stage in a multistandard radio receiver is proposed. For both narrowband and wideband standard processing, NUS promises relaxing system design constraints, decreasing the sampling frequency as well as reducing power consumption. A non-uniform clock generator, called Pseudorandom Direct Sampler (PDS), is described. PDS is used to non-uniformly control the Analog-to-Digital Converter (ADC) performing IF sub-sampling in proposed GSM/UMTS/WiFi multistandard receiver architecture. PDS architecture is based on using modified Direct Digital Synthesizer (DDS) including pseudorandom behavior. A 90-nm CMOS FPGA based prototype of PDS reveals an internal clocking up to 350 MHz and a power consumption lower than 4 mW. |
| Publisher | ACADEMY PUBLISHER |
| Date | 2010-10-01 |
| Source | Journal of Computers Vol 5, No 10 (2010): Special Issue: Selected Papers of The Second International Conference on Signa |
| Rights | Copyright © ACADEMY PUBLISHER - All Rights Reserved.To request permission, please check out URL: http://www.academypublisher.com/copyrightpermission.html. |