| 摘要 |
<p>Disclosed in the embodiments of the present invention is a Centralized Baseband Processing Unit CBPU, which comprises an interchanging module and at least a Base Band Unit BBU, and further comprises a resource mapping module: the resource mapping module is used to execute resource block demapping for the uplink frequency domain baseband signal resulted from Fast Fourier Transform FFT, separate the signals for each user from the corresponding sub-carrier; the interchanging module is used to transmit the signals for said each user to the corresponding BBU; the BBU is used to process the received user signals. Correspondingly, further disclosed in the embodiments of the present invention are an RRU and a method for frequency domain transmission. Based on the technical solutions above, the transmission performance of a Centralized Residential Access Network C-RAN system is improved.</p> |
