CA2536410A1 - Transmitter diversity technique for wireless communications - Google Patents
Transmitter diversity technique for wireless communications Download PDFInfo
- Publication number
- CA2536410A1 CA2536410A1 CA002536410A CA2536410A CA2536410A1 CA 2536410 A1 CA2536410 A1 CA 2536410A1 CA 002536410 A CA002536410 A CA 002536410A CA 2536410 A CA2536410 A CA 2536410A CA 2536410 A1 CA2536410 A1 CA 2536410A1
- Authority
- CA
- Canada
- Prior art keywords
- diversity
- antennas
- transmit
- effected
- redundantly transmitting
- 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
- 230000021615 conjugation Effects 0.000 abstract 1
Landscapes
- Radio Transmission System (AREA)
Abstract
A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes apace diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies. Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same apace block code with two transmit and two receive antennas.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5901697P | 1997-09-16 | 1997-09-16 | |
US60/059,016 | 1997-09-16 | ||
US5921997P | 1997-09-18 | 1997-09-18 | |
US60/059,219 | 1997-09-18 | ||
US6378097P | 1997-10-31 | 1997-10-31 | |
US60/063,780 | 1997-10-31 | ||
CA002405875A CA2405875C (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002405875A Division CA2405875C (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2536410A1 true CA2536410A1 (en) | 1999-03-25 |
CA2536410C CA2536410C (en) | 2009-05-19 |
Family
ID=34397071
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002536410A Expired - Lifetime CA2536410C (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
CA002509947A Abandoned CA2509947A1 (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
CA2495356A Expired - Lifetime CA2495356C (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002509947A Abandoned CA2509947A1 (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
CA2495356A Expired - Lifetime CA2495356C (en) | 1997-09-16 | 1998-08-31 | Transmitter diversity technique for wireless communications |
Country Status (1)
Country | Link |
---|---|
CA (3) | CA2536410C (en) |
-
1998
- 1998-08-31 CA CA002536410A patent/CA2536410C/en not_active Expired - Lifetime
- 1998-08-31 CA CA002509947A patent/CA2509947A1/en not_active Abandoned
- 1998-08-31 CA CA2495356A patent/CA2495356C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2509947A1 (en) | 1999-03-25 |
CA2495356A1 (en) | 1999-03-25 |
CA2495356C (en) | 2011-01-11 |
CA2536410C (en) | 2009-05-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20180831 |