OFDM can be extended with OFDMA for uplink multiple access among users in the same cell. For avoidance of inter-cell interference, FDMA with DCA or DFS is once again of interest.
The text discusses the use of OFDM (Orthogonal Frequency Division Multiplexing) for uplink communication in cellular networks.  To avoid interference between cells, FDMA (Frequency Division Multiple Access) with either DCA (Dynamic Channel Allocation) or DFS (Dedicated Short-Range Communication) is being considered.