Groupwise successive interference cancellation for block transmission with reception diversity
View Patent ↗A plurality of data signals are received over an antenna array having a plurality of antenna elements. The data signals are transmitted over a shared spectrum in a wireless communication system. A signal having each of the data signals is received over each antenna element. The plurality of data signals are grouped into a plurality of groups. The received signals of the antenna elements are matched filtered for a first group of the plurality of groups, producing a matched filtered result. Data is jointly detected of the first group using the matched filtered result. An interference correction signal is constructed using the detected data for each antenna element. The interference cancelled result is subtracted from the received signal of each antenna element, producing an interference cancelled result for each antenna element. Data is successively detected for remaining groups using the interference cancelled result for each antenna element.
1. A receiver comprising:
an antenna array having a plurality of antenna elements;
a plurality of demodulators;
a channel estimation device configured to provide channel information; and
a groupwise successive interference cancellation joint detection device (GSIC-JD) configured to:
construct an interference correction signal using jointly detected data for each antenna element;
produce an interference cancelled result for each antenna element; and
convert the produced interference cancelled result into hard symbols.
2. The receiver of claim 1 , wherein each of the plurality of demodulators corresponds to one of the plurality of antenna elements, and each demodulator is configured to demodulate a radio frequency (RF) signal to produce baseband signals.
3. The receiver of claim 1 , wherein the channel estimation device is configured to provide channel information based on training sequence components in the baseband signals.
4. A base station comprising:
an antenna array having a plurality of antenna elements;
a plurality of demodulators;
a channel estimation device configured to provide channel information; and
a groupwise successive interference cancellation joint detection device (GSIC-JD) configured to:
construct an interference correction signal using jointly detected data for each antenna element;
produce an interference cancelled result for each antenna element; and
convert the produced interference cancelled result into hard symbols.
5. The base station of claim 4 , wherein each of the plurality of demodulators corresponds to one of the plurality of antenna elements, and each demodulator is configured to demodulate a radio frequency (RF) signal to produce baseband signals.
6. The base station of claim 4 , wherein the channel estimation device is configured to provide channel information based on training sequence components in the baseband signals.
7. A wireless transmit/receive unit (WTRU) comprising:
an antenna array having a plurality of antenna elements;
a plurality of demodulators;
a channel estimation device configured to provide channel information; and
a groupwise successive interference cancellation joint detection device (GSIC-JD) configured to:
construct an interference correction signal using jointly detected data for each antenna element;
produce an interference cancelled result for each antenna element; and
convert the produced interference cancelled result into hard symbols.
8. The WTRU of claim 7 , wherein each of the plurality of demodulators corresponds to one of the plurality of antenna elements, and each demodulator is configured to demodulate a radio frequency (RF) signal to produce baseband signals.
9. The WTRU of claim 7 , wherein the channel estimation device is configured to provide channel information based on training sequence components in the baseband signals.