Orthogonal space-time block coding for continuous phase modulation with frequency-domain equalization

A space-time coding design for continuous phase modulation over the frequency selective fading channel

“…4. Performances of the proposed scheme and the scheme in [5] In Fig.4, the performance of the proposed scheme and the scheme in [5] is given. Again, TU-6 channel is used to perform the simulation.…”

“…Again, TU-6 channel is used to perform the simulation. Since the scheme in [5] is sample based, 4 samples are taken for each transmitted symbol at the receiver. As we can see, the proposed scheme only suffers from little performance loss compared with the scheme in [5].…”

“…The computational complexity of the proposed scheme and the scheme in [5] are compared in Table II. As the both schemes are designing STBC for CPM over multipath fading channel, the comparison is fair.…”

“…As the both schemes are designing STBC for CPM over multipath fading channel, the comparison is fair. In Table II, N, L, N s denote the length of the data block, the memory length of CPM signals and the sample rate of the scheme in [5], respectively. As 4L redundant symbols are added, the proposed scheme takes N/2 + 2L points DFT, IDFT for each sub-block(α …”

“…All these designs suppose that the channel is flat fading and use the viterbi decoder at the receiver. In [5] Ozgul and Delic proposed an Orthogonal space-time block Coding for CPM over the multipath fading channel. But its equalization algorithm is based on signal samples, and also relies on the viterbi decoder.…”