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METHODS AND APPARATUSES FOR REFERENCE SIGNALS AND PHASE ROTATION IN 2 SUB-CARRIER PI/2 BINARY PHASE SHIFT KEYING COMMUNICATION
METHODS AND APPARATUSES FOR REFERENCE SIGNALS AND PHASE ROTATION IN 2 SUB-CARRIER PI/2 BINARY PHASE SHIFT KEYING COMMUNICATION
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机译:2个子载波PI / 2双相移键控通信中参考信号和相位旋转的方法和装置
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摘要
The present invention provides methods and apparatuses for implementation of cyclic prefix (CP) and demodulation reference signal (DMRS) in 2 sub-carrier pi/2 binary phase shift keying (BPSK) modulation in a communication system. DMRS symbols are interleaved with data-carrying symbols and configured such that they are alternatingly transmitted on different ones of the two sub-carriers. When a DMRS symbol is transmitted on one sub-carrier, the other sub-carrier may be unused. In implementing CP, phase rotations may be applied to modulation symbols, such that each concurrently transmitted pair of symbols is subjected to a same phase rotation. The phase rotation can be derived based on an average frequency of the two (e.g. adjacent) sub-carriers in use. The phase rotations can be updated recursively, and the update multiplied by a scaling factor.
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