A CODE DESIGN CRITERIA FOR NOT FULLY CONNECTED CHANNEL

摘要

There are parallel channels which are not fully connected in practice, such as Frequency DivisionMultiplex (FDM or Orthogonal FDM) systems. Conventional space-time codes can be used for such parallelchannels but not the optimal. Based on the derivation of PEP expression for codes transmitted on parallel blockfading channels, criteria of codes design for not fully connected channels are proposed and are compared withTarokh's criteria for fully connected channel. New codes for such channels are provided by systematical andexhaustive search. Simulation results show that these codes offer better performance on parallel FDM channelsthan other known codes.