human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "A framework for software-defined digital terrestrial television (DTTV)"):
  Abstract: Commercially viable free DTTV will depend on adoption of new technologies, some already available, that will in turn generate new business models. These technologies will permit new real and virtual channels through more efficient spectrum usage and dynamic sharing of the maximum data rate among several applications. The ongoing evolution of software-based receivers will provide the backbone for reliable reception indoors of arbitrarily formatted transmission that will not create new interference to other services

Includes members:
  Member "Interference to UHF-DTTV Channels by Unlicensed Devices":
    also connected through other hyperedges:
      (none)

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science