Common resource block

The data from the upper layer (or MAC) given to the physical layer in LTE system is basically referred as transport block. For single antenna transmission mode viz. SISO , there will be 1 transport block which will be generated for each TTI(Transmission Time Interval).

Common Resource Blocks (CRBs) Common resource blocks are numbered from 0 and upwards in the frequency domain for each subcarrier spacing configuration ‘µ’ . The CRBs associated with each and every SCS are aligned at Point A i.e., the center of subcarrier#0 of CRB#0 for each subcarrier spacing coincides with Point A.

A resource block (RB ) is the smallest unit of resources that can be allocated to a user . The resource block is 180 kHz. … The 89600 VSA LTE demodulator currently only supports resource blocks that are 12 subcarriers wide. Frequency units can be expressed in number of subcarriers or resource blocks.