| 摘要 |
Embodiments of the present invention disclose a central baseband processing unit (CBPU), including a switching module and at least one base band unit (BBU) and further including a resource mapping module. The resource mapping module is configured to perform resource block demapping for uplink frequency domain baseband signals obtained through Fast Fourier Transform (FFT) and demultiplex signals of each user from corresponding subcarriers. The switching module is configured to transmit the signals of each user to the corresponding BBU, and the BBU is configured to process the received user signals. Correspondingly, embodiments of the present invention also disclose a remote RF unit (RRU) and a frequency domain transmission method. The technical solution provided in the present invention can improve transmission performance of a C-RAN system.
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