Claims
- 1. A method for receiving a plurality of data signals over an antenna array having a plurality of antenna elements, the data signals transmitted over a shared spectrum in a wireless communication system, the method comprising:
receiving a signal over each antenna element having each of the data signals; grouping the plurality of data signals into a plurality of groups; matched filtering the received signals of the antenna elements for a first group of the plurality of groups, producing a matched filtered result; jointly detecting data of the first group using the matched filtered result; constructing an interference correction signal using the detected data for each antenna element; subtracting from the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element; and successively detecting data of remaining groups using the interference cancelled result for each antenna element.
- 2. The method of claim 1 wherein the grouping of the plurality of data signals comprises measuring a combined power of each data signal as received by each antenna element and grouping together data signals having a substantially similar combined power.
- 3. The method of claim 1 wherein the jointly detecting data is performed using a zero forcing block linear equalizer.
- 4. The method of claim 1 wherein the jointly detecting data is performed using a minimum mean square error block linear equalizer.
- 5. The method of claim 1 wherein the jointly detecting data produces soft symbols and the method further comprising converting the soft symbols into hard symbols prior to interference correction signal construction.
- 6. A base station for receiving a plurality of data signals over an antenna array having a plurality of antenna elements, the data signals received over a shared spectrum in a wireless communication system, the base station comprising:
each antenna element for receiving a signal having each of the data signals; means for grouping the plurality of data signals into a plurality of groups; means for matched filtering the received signals of the antenna elements for a first group of the plurality of groups, producing a matched filtered result; means for jointly detecting data of the first group using the matched filtered result; means for constructing an interference correction signal using the detected data for each antenna element; means for subtracting from the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element; and means for successively detecting data of remaining groups using the interference cancelled result for each antenna element.
- 7. The base station of claim 6 wherein the means for grouping of the plurality of data signals comprises means for measuring a combined power of each data signal as received by each antenna element and means for grouping together data signals having a substantially similar combined power.
- 8. The base station of claim 6 wherein the means for jointly detecting data uses a zero forcing block linear equalizer.
- 9. The base station of claim 6 wherein the means for jointly detecting data uses a minimum mean square error block linear equalizer.
- 10. The base station of claim 6 wherein the means for jointly detecting data produces soft symbols and the base station further comprising a soft to hard decision device for converting the soft symbols into hard symbols prior to input into the menas for interference correction signal construction.
- 11. A base station for receiving a plurality of data signals over an antenna array having a plurality of antenna elements, the data signals received over a shared spectrum in a wireless communication system, the base station comprising:
each antenna element for receiving a signal having each of the data signals; a matched filter for matched filtering the received signals of the antenna elements for a first group of a plurality of groups, producing a first matched filtered result, the plurality of data signals are grouped into the plurality of groups; a first joint detector for jointly detecting data of the first group using the first matched filtered result; an interference correction construction device for constructing an interference correction signal using the detected data for each antenna element; a plurality of subtractors for subtracting from the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element; and a matched filter for matched filtering the produced interference cancelled result of the antenna elements for a second group of the plurality of groups, producing a second matched filtered result, the plurality of data signals are grouped into the plurality of groups; and a second joint detector for jointly detecting data of the second group using the second matched filtered result.
- 12. The base station of claim 11 wherein the grouping of the plurality of data signals comprises measuring a combined power of each data signal as received by each antenna element and grouping together data signals having a substantially similar combined power.
- 13. The base station of claim 11 wherein the first and second joint detectors use a zero forcing block linear equalizer.
- 14. The base station of claim 11 wherein the first and second joint detectors use a minimum mean square error block linear equalizer.
- 15. The base station of claim 11 wherein the first and second joint detectors produce soft symbols and the base station further comprising a first and second soft to hard decision devices for converting the soft symbols into hard symbols.
- 16. A wireless transmit/receive unit for receiving a plurality of data signals over an antenna array having a plurality of antenna elements, the data signals received over a shared spectrum in a wireless communication system, the wireless transmit/receive unit comprising:
each antenna element for receiving a signal having each of the data signals; means for grouping the plurality of data signals into a plurality of groups; means for matched filtering the received signals of the antenna elements for a first group of the plurality of groups, producing a matched filtered result; means for jointly detecting data of the first group using the matched filtered result; means for constructing an interference correction signal using the detected data for each antenna element; means for subtracting from the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element; and means for successively detecting data of remaining groups using the interference cancelled result for each antenna element.
- 17. The wireless transmit/receive unit of claim 16 wherein the means for grouping of the plurality of data signals comprises means for measuring a combined power of each data signal as received by each antenna element and means for grouping together data signals having a substantially similar combined power.
- 18. The wireless transmit/receive unit of claim 16 wherein the means for jointly detecting data uses a zero forcing block linear equalizer.
- 19. The wireless transmit/receive unit of claim 16 wherein the means for jointly detecting data uses a minimum mean square error block linear equalizer.
- 20. The wireless transmit/receive unit of claim 16 wherein the means for jointly detecting data produces soft symbols and the wireless transmit/receive unit further comprising a soft to hard decision device for converting the soft symbols into hard symbols prior to input into the menas for interference correction signal construction.
- 21. A wireless transmit/receive unit for receiving a plurality of data signals over an antenna array having a plurality of antenna elements, the data signals received over a shared spectrum in a wireless communication system, the wireless transmit/receive unit comprising:
each antenna element for receiving a signal having each of the data signals; a matched filter for matched filtering the received signals of the antenna elements for a first group of a plurality of groups, producing a first matched filtered result, the plurality of data signals are grouped into the plurality of groups; a first joint detector for jointly detecting data of the first group using the first matched filtered result; an interference correction construction device for constructing an interference correction signal using the detected data for each antenna element; a plurality of subtractors for subtracting from the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element; and a matched filter for matched filtering the produced interference cancelled result of the antenna elements for a second group of the plurality of groups, producing a second matched filtered result, the plurality of data signals are grouped into the plurality of groups; and a second joint detector for jointly detecting data of the second group using the second matched filtered result.
- 22. The wireless transmit/receive unit of claim 21 wherein the grouping of the plurality of data signals comprises measuring a combined power of each data signal as received by each antenna element and grouping together data signals having a substantially similar combined power.
- 23. The wireless transmit/receive unit of claim 21 wherein the first and second joint detectors use a zero forcing block linear equalizer.
- 24. The wireless transmit/receive unit of claim 21 wherein the first and second joint detectors use a minimum mean square error block linear equalizer.
- 25. The wireless transmit/receive unit of claim 21 wherein the first and second joint detectors produce soft symbols and the wireless transmit/receive unit further comprising a first and second soft to hard decision devices for converting the soft symbols into hard symbols.
CROSS REFERENCE TO RELATED APPLICATION(S)
[0001] This application claims priority from U.S. provisional application No. 60/397,361, filed Jul. 19, 2002, which is incorporated by reference as if fully set forth.
Provisional Applications (1)
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Number |
Date |
Country |
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60397361 |
Jul 2002 |
US |