发明名称 |
METHODS AND APPARATUS FOR IMPROVED UTILIZATION OF AIR LINK RESOURCES IN A WIRELESS COMMUNICATIONS SYSTEM |
摘要 |
Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals. |
申请公布号 |
WO2008150772(A1) |
申请公布日期 |
2008.12.11 |
申请号 |
WO2008US64889 |
申请日期 |
2008.05.27 |
申请人 |
QUALCOMM INCORPORATED;RICHARDSON, THOMAS;JIN, HUI;LAROIA, RAJIV |
发明人 |
RICHARDSON, THOMAS;JIN, HUI;LAROIA, RAJIV |
分类号 |
H04L5/02;H04B7/005;H04B7/06;H04B14/02;H04L1/00;H04L25/02;H04L25/49;H04L27/26 |
主分类号 |
H04L5/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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