发明名称 |
METHOD AND APPARATUS FOR PILOT SIGNAL PROCESSING IN A WIRELESS COMMUNICATION SYSTEM |
摘要 |
<p>A wireless communication system is provided that spreads pilot signals, or channel state information reference signals (CSI-RSs), using a spreading code chosen from a set of mutually unbiased bases (MUBs). The advantages of such spreading with MUBs are that multiple base stations can send their pilot signals on a same time-frequency resources, making the pilot signal design very efficient and also improving channel estimation at a user equipment through orthogonal and quasi-orthogonal spreading which gives a gain above noise and interference. A short spreading code chosen from MUBs may be used for spreading pilot signals transmitted from each antenna of a base station within a time-frequency resource comprising multiple closely-spaced subcarriers in frequency and/or multiple closely-spaced symbols in time.</p> |
申请公布号 |
EP2524439(A1) |
申请公布日期 |
2012.11.21 |
申请号 |
EP20100810907 |
申请日期 |
2010.12.30 |
申请人 |
MOTOROLA MOBILITY LLC |
发明人 |
THOMAS, TIMOTHY A.;MONDAL, BISHWARUP |
分类号 |
H04B1/707;H04J13/00;H04J13/16 |
主分类号 |
H04B1/707 |
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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