CA2137010A1 - Subscriber unit for wireless digital subscriber communication system - Google Patents
Subscriber unit for wireless digital subscriber communication systemInfo
- Publication number
- CA2137010A1 CA2137010A1 CA 2137010 CA2137010A CA2137010A1 CA 2137010 A1 CA2137010 A1 CA 2137010A1 CA 2137010 CA2137010 CA 2137010 CA 2137010 A CA2137010 A CA 2137010A CA 2137010 A1 CA2137010 A1 CA 2137010A1
- Authority
- CA
- Canada
- Prior art keywords
- digital
- chip
- intermediate frequency
- symbols
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Abstract
A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processorchip transcodes a digital voice input signal to provide digital input symbols;
demodulates an output signal received from the base station to provide digital output symbols; and synthesizes a digital voice output signal from the digital output symbols. The FIR chip FIR filters the digital input symbols and generatestiming signals for timing the transcoding and synthesizing operations in the processor chip. The DIF chip digitally synthesizes a digital intermediate frequency signal by direct digital synthesis (DDS) and modulates the digital intermediate frequency signal with the filtered input symbols to provide a modulated intermediate frequency input signal. The radio further processes the modulated input signal for transmission to the base station.
demodulates an output signal received from the base station to provide digital output symbols; and synthesizes a digital voice output signal from the digital output symbols. The FIR chip FIR filters the digital input symbols and generatestiming signals for timing the transcoding and synthesizing operations in the processor chip. The DIF chip digitally synthesizes a digital intermediate frequency signal by direct digital synthesis (DDS) and modulates the digital intermediate frequency signal with the filtered input symbols to provide a modulated intermediate frequency input signal. The radio further processes the modulated input signal for transmission to the base station.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US394,497 | 1989-08-14 | ||
| US07/394,497 US5008900A (en) | 1989-08-14 | 1989-08-14 | Subscriber unit for wireless digital subscriber communication system |
| CA002022128A CA2022128C (en) | 1989-08-14 | 1990-07-27 | Subscriber unit for wireless digital subscriber communication system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002022128A Division CA2022128C (en) | 1989-08-14 | 1990-07-27 | Subscriber unit for wireless digital subscriber communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2137010A1 true CA2137010A1 (en) | 1991-02-15 |
| CA2137010C CA2137010C (en) | 1999-05-18 |
Family
ID=29271275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002137010A Expired - Lifetime CA2137010C (en) | 1989-08-14 | 1990-07-27 | Subscriber unit for wireless digital subscriber communication system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2137010C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111832715A (en) * | 2019-04-18 | 2020-10-27 | 爱思开海力士有限公司 | Processing element and processing system |
-
1990
- 1990-07-27 CA CA002137010A patent/CA2137010C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111832715A (en) * | 2019-04-18 | 2020-10-27 | 爱思开海力士有限公司 | Processing element and processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2137010C (en) | 1999-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |