Figure 12 Agero arb proto conf ack pdu retransmission illustration t0 to 24 a The entire frame 6 17 symbols is divided first into 6 subblocks of 17 symbols each Then the recaption transmitter keeps transmitting each symbol until an ACK PDU is received confirming that one or multiple of the ARQ processes were decoded correctly b An example of 1 subframe within an ITS system using retransmission on subcarriers a 10 bits packed in 1 symbol 1 symbol per suallocation in the context of a Large Distributed antenna system LDAS 35 Terreman Robustness a Terreman Robustness function symbol or complex number x a jb b A Typical Terreman Robustness Logic TRU