Back to results
US 2012/0008617 A1Published application
Hybrid orthogonal frequency division multiple access wtru and method
AssigneeInterDigital Technology Corporation
InventorsYingming Tsai, Guodong Zhang, Jung-Lin Pan
Life of this patent
Estimating the term…
Abstract
A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.
Claims19
A wireless transmit/receive unit (WTRU) comprising:
- a receiver configured to receive in a first single symbol time interval a plurality of subcarriers;
- wherein a first group of subcarriers from the plurality of subcarriers includes information for the WTRU combined with an orthogonal sequence;
- wherein the first group of subcarriers includes information for a plurality of WTRUs;
- wherein the information for each of the plurality of WTRUs is combined with an orthogonal sequence and the orthogonal sequence for each of the plurality of WTRUs is different;
- wherein a second group of subcarriers from the plurality of subcarriers includes information for the WTRU not combined with an orthogonal sequence;
- and
- wherein the receiver is further configured to recover the information for the WTRU from the first group of subcarriers and the receiver is further configured to recover the information for the WTRU from the second group of subcarriers.
4 more elements
A method comprising:
- receiving by a wireless transmit/receive unit (WTRU) in a first single symbol time interval a plurality of subcarriers;
- wherein a first group of subcarriers from the plurality of subcarriers includes information for the WTRU combined with an orthogonal sequence;
- wherein the first group of subcarriers includes information for a plurality of WTRUs;
- wherein the information for each of the plurality of WTRUs is combined with an orthogonal sequence and the orthogonal sequence for each of the plurality of WTRUs is different;
- wherein a second group of subcarriers from the plurality of subcarriers includes information for the WTRU not combined with an orthogonal sequence;
- and
- recovering by the WTRU the information for the WTRU from the first group of subcarriers;
- and
- recovering by the WTRU the information for the WTRU from the second group of subcarriers.
6 more elements
A wireless network device comprising:
- a transmitter configured to transmit in a first single symbol time interval a plurality of subcarriers;
- wherein a first group of subcarriers from the plurality of subcarriers includes information for a first wireless transmit/receive unit (WTRU) combined with an orthogonal sequence;
- wherein the first group of subcarriers includes information for a plurality of WTRUs;
- wherein the information for each of the plurality of WTRUs is combined with an orthogonal sequence and the orthogonal sequence for each of the plurality of WTRUs is different;
- wherein a second group of subcarriers from the plurality of subcarriers includes information for the first WTRU not combined with an orthogonal sequence.
2 more elements
Dependencies are inferred from the claim text.