Paper Info
Title
An Improved Direct Digital Synthesizer Using Hybrid Wave Pipelining and CORDIC algorithm for Software Defined Radio.
Abstract
The improved Direct Digital Synthesizer (DDS) using the Hybrid Wave Pipelining (HWP) technique and COordinate Rotation DIgital Computer (CORDIC) algorithm for Software Defined Radio (SDR) is presented in this paper. In order to achieve high throughput, the hybrid wave pipelining technique is adopted. The HWP can be used to speed up the circuits without insertion of storage elements. The CORDIC algorithm is used for phase-to-amplitude conversion and utilized for dynamic transformation rather than Read Only Memory (ROM) static addressing. The frequency resolution and phase resolution are achieved as 0.023 Hz and 0.088 degree, respectively, at the maximum operating frequency of 199.288 MHz for the proposed DDS architecture. The spectral purity of the proposed design has been improved to 114 dBc with a throughput of 94 %. This paper is focused on the design and implementation of DDS using hybrid wave pipelining with CORDIC approach to target on Xilinx Spartan 3 (XC3S400-5PQ208) Field Programmable Gate Array (FPGA) with a speed grade of −5. The proposed DDS design reduces the gate count from 49.4 % to 18.2 % as compared to the conventional pipelined Read Only Memory Look Up Table (ROMLUT) DDS method. The throughput of the proposed method has been improved from 78 % to 94 % and 55 % of total power reduction as compared with conventional DDS. The performance of the improved DDS architecture is compared with several existing DDS architectures and it is found that the present design is outperforming and can be used for software defined radios.
Year
DOI
Venue
2013
10.1007/s00034-012-9495-x
Circuits Systems and Signal Processing
Keywords
Field
DocType
Software defined radio, Direct digital synthesis, Hybrid wave pipelining, CORDIC, VLSI
Pipeline (computing),Lookup table,Gate count,Read-only memory,Computer science,Software-defined radio,Field-programmable gate array,Electronic engineering,CORDIC,Direct digital synthesizer
Journal
Volume
Issue
ISSN
32
3
1531-5878
Citations 
PageRank 
References 
3
0.46
18
Authors
2
Name
Order
Citations
PageRank
M. Madheswaran110215.57
T. Menakadevi230.80