© The Institution of Electrical Engineers
The design of a real-time analyser for performing fast Fourier transforms is described. Data are gathered at regular intervals without breaks for servicing the purpose-designed Fourier computer, which is used at the maximum speed permitted by this device. Three DMA devices are used to perform input, output and service of the Fourier computer. Separation of the real and complex parts and bit reversal are carried out by unusual wiring of the DMA devices to achieve the necessary speed with relatively few components.
References
-
-
1)
-
J.W. Cooley ,
J.W. Tukey
.
An algorithm for machine calculation of complex Fourier series.
Math. Comput.
,
297 -
301
-
2)
-
: `Zilog microcomputer components data book', 1981, p. 27–44.
-
3)
-
F.J. Harris
.
On the use of windows for harmonic analysis with the discrete Fourier transform.
Proc. IEEE
,
51 -
83
-
4)
-
M. Trivedi ,
K.V. Lever
.
Measured performance of block floating point hardware FFT processor for real time speech transform coding.
IEE Proceedings Part F, Commun., Radar & Signal Process.
,
54 -
60
-
5)
-
A. Antoniou
.
(1979)
, Digital filters analysis and design.
-
6)
-
Y. Hoffner ,
M.F. Smith
.
Communication between two microprocessors through common memory.
Microprocess. & Microsyst.
,
303 -
308
-
7)
-
N.S. Reddy ,
M.N.S. Swamy
.
Switched capacitor realisation of a discrete Fourier transformer.
IEEE Trans.
,
254 -
255
-
8)
-
W.K. Luk ,
H.F. Li
.
Microprocessor-based real-time/online FFT processor.
IEE Proceedings Part E, Comput. & Digital Tech.
,
18 -
23
-
9)
-
Wallingford, E.E.: `A fixed point FFT for a 16 bit microcomputer', Proceedings of fifth annual international electronics and control society conference on industrial applications of microprocessors, March 1979, , p. 256–259.
-
10)
-
: `AMI telecommunications design manual', 1982, p. 7.106–7.125.
http://iet.metastore.ingenta.com/content/journals/10.1049/sm.1984.0026
Related content
content/journals/10.1049/sm.1984.0026
pub_keyword,iet_inspecKeyword,pub_concept
6
6