发明名称 |
RACH RECEPTION BY REPEATED USE OF DATA FFT AND AN IFFT FOLLOWED BY CONCATENATION OF THE RESULTING TIME SIGNALS |
摘要 |
Methods and devices for extracting a random access channel (RACH) preamble are provided using as input a number of Fast Fourier Transformed (FFT) symbols, in order to extract the RACH preamble from a signal received in a base station from a user device in a radio communication system. An initial cyclic prefix (symbol CP) is removed prior to performing FFT on symbols. A phase adjustment is performed to compensate for group delays due to symbol CP gaps occurring when generating the baseband signal, the phase adjustment being determined individually for each symbol. |
申请公布号 |
EP2924939(A1) |
申请公布日期 |
2015.09.30 |
申请号 |
EP20150001385 |
申请日期 |
2012.05.10 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
MCGOWAN, NEIL;DA SILVEIRA, MARTHINUS WILLEM |
分类号 |
H04L27/26;H04W74/08 |
主分类号 |
H04L27/26 |
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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