| 摘要 |
The invention provides a method and an apparatus, of compressing a multi-carrier modulation signal in frequency domain. By setting a modulation mode indicator, the preferable technical scheme could be changed dynamically according to the modulation mode, so as to select the corresponding bits for the different modulation mode. Moreover, according the preferable technical scheme of the present invention, the signal of the data channel in the resource element after extracting the second scale factor is represented by the bits which are occupied by a pair of I/Q signal. Thus, more bits are saved and compression ratio is enhanced. |
| 主权项 |
1. A method, in a base band unit, of compressing a multi-carrier modulation signal in frequency domain, wherein the method is implemented in terms of a physical resource block pair, the method comprises:
setting a control channel position indicator including a first number of bits, for indicating symbol position occupied by the control channel in the physical resource block pair; setting a modulation mode indicator including a second number of bits, for indicating modulation mode of data channel in the physical resource block; extracting a first common scale factor of signals of the control channel in the physical resource block, and quantifying the first common scale factor; extracting a second common scale factor of signals of the data channel in the physical resource block, and quantifying the second common scale factor; configuring the control channel position indicator, the modulation mode indicator, the quantified first common scale factor and the quantified second common scale factor to a signal header; for each resource element in the physical resource pair occupied by the signal of the control channel, representing the signal of the control channel in the resource element after extracting the first common scale factor with a third number of bits, and for each resource element in the physical resource pair occupied by the signal of the data channel, representing the signal of the data channel in the resource element after extracting the second scale factor with a fourth number of bits, according to the modulation mode of the data channel in the physical resource block pair; encapsulating the signal header, the signal of the control channel in the resource element in the physical resource block pair processed, and the signal of the data channel in the resource element in the physical resource block pair processed into a compressed package; and sending the compressed package to a remote radio head. |
