TW200610331A - Fast walsh transform (fwt) demodulator and method thereof - Google Patents
Fast walsh transform (fwt) demodulator and method thereofInfo
- Publication number
- TW200610331A TW200610331A TW093127123A TW93127123A TW200610331A TW 200610331 A TW200610331 A TW 200610331A TW 093127123 A TW093127123 A TW 093127123A TW 93127123 A TW93127123 A TW 93127123A TW 200610331 A TW200610331 A TW 200610331A
- Authority
- TW
- Taiwan
- Prior art keywords
- fwt
- max
- power
- demodulator
- data
- Prior art date
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- Mobile Radio Communication Systems (AREA)
Abstract
A fast Walsh transform (FWT) demodulator and a method thereof are provided. The FWT demodulator includes a FWT correlator for receiving and transforming a first data base on a FWT method to outputs a plurality of third data; a plurality of power approximation device (PAD) for receiving and calculating one of the third data to outputs an approximating power value respectively, the approximating power values are separated into a plurality of subgroup; a first set of comparators for choosing a plurality of subgroup-max-value from each subgroups; a plurality of power colculation device (PCD) for receiving and calculating one of the subgroup-max-value to outputs a exact power value respectively; and a second set of comparators for choosing max power value from each exact power values to output a second data. By apply "PAD" to replace "PCD" into "pre-selection" subgroups with "max-and-zero" property, the invention can reduce the implementation cost without performance degradation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93127123A TWI256809B (en) | 2004-09-08 | 2004-09-08 | Fast walsh transform (FWT) demodulator and method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93127123A TWI256809B (en) | 2004-09-08 | 2004-09-08 | Fast walsh transform (FWT) demodulator and method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200610331A true TW200610331A (en) | 2006-03-16 |
TWI256809B TWI256809B (en) | 2006-06-11 |
Family
ID=37614786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93127123A TWI256809B (en) | 2004-09-08 | 2004-09-08 | Fast walsh transform (FWT) demodulator and method thereof |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI256809B (en) |
-
2004
- 2004-09-08 TW TW93127123A patent/TWI256809B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI256809B (en) | 2006-06-11 |
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Legal Events
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MM4A | Annulment or lapse of patent due to non-payment of fees |