DocumentCode :
1080390
Title :
Reconfigurable Digital Front-End Hardware for Wireless Base-Station Transmitters: Analysis, Design and FPGA Implementation
Author :
Lashkarian, Navid ; Hemphill, Ed ; Tarn, Helen ; Parekh, Hemang ; Dick, Chris
Author_Institution :
Arraycomm LLC, San Jose
Volume :
54
Issue :
8
fYear :
2007
Firstpage :
1666
Lastpage :
1677
Abstract :
A versatile digital front-end architecture is designed and implemented on field-programmable gate array (FPGA) technology. The architecture includes the digital up-conversion, and peak-to-average power ratio (PAPR) reduction blocks that are applicable to down-link data paths in multi-band wireless base stations such as WCDMA or Wimax systems. Transmitter linearity requirements are addressed and tradeoff analysis for design and optimization of the PAPR reduction algorithm within the context of the error vector magnitude and adjacent channel leakage ratio quality metrics are studied. Statistical characteristics of the clipping noise are analyzed and a novel method for clipping the multi-band signal under the phase invariant constraint is proposed. Our study also includes mapping of the signal processing algorithms onto Xilinx Virtex-4trade FPGA device and addresses the resource utilization and efficient hardware implementation of the above signal processing blocks. Performance assessments and hardware validation of the proposed architecture are also addressed.
Keywords :
digital signal processing chips; field programmable gate arrays; mobile radio; radio transmitters; software radio; statistical analysis; WCDMA systems; Wimax systems; Xilinx Virtex-4trade FPGA device; adjacent channel leakage ratio quality metrics; clipping noise; digital up-conversion; down-link data paths; error vector magnitude; field-programmable gate array technology; multibandwireless base-station transmitters; peak-to-average power ratio reduction blocks; phase invariant constraint; reconfigurable digital front-end hardware; signal processing algorithms; statistical characteristics; Algorithm design and analysis; Base stations; Field programmable gate arrays; Hardware; Linearity; Multiaccess communication; Peak to average power ratio; Signal processing algorithms; Transmitters; WiMAX; Adjacent channel leakage ratio (ACLR); crest factor reduction; error vector magnitude (EVM); field-programmable gate array (FPGA); multi-band transmitters; peak-to-average power ratio (PAPR) reduction; reconfigurable transmitter;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2007.902608
Filename :
4282080
Link To Document :
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