Defining performance limits for turbo-code assisted synchronization in DVB-S systems

On Pilot-Symbol-Assisted Carrier Synchronization for DVB-S2 Systems

“…Let . For all , compute (7) and then (8) 4) The messages sent to the decoder for a new iteration will be, for all…”

“…The CBC algorithm exhibits only a minor loss due to phase noise, less than 0.1 dB for QPSK, 8-PSK and 16-APSK modulations. 8 On the contrary, the loss for 32-APSK is larger, due to the larger sensitivity of this constellation to phase mismatches as well as to the 7 Since we may stop the selection procedure when the code syndrome falls below the threshold, on average n more iterations are necessary for the selection step. 8 In [10] a PLL-based synchronization algorithm was proposed and its performance investigated in the DVB-S2 scenario.…”

“…However, it can be shown that the amount of this Doppler rate does not affect the performance of the algorithm we propose for joint detection and decoding in the presence of phase noise and therefore can be ignored [3]. The fine frequency estimation and the problem of detection and decoding in the presence of phase noise deserve a greater attention [6], [7] and in this paper we will focus on them. The solution we report is a merging of both new and already proposed techniques customized for this scenario-in this sense this is a semi-tutorial paper.…”

Performance comparison of convolutional and turbo convolutional codes for ISDB-T in AWGN and Brazilian channels

“…The most important of them is the Return Channel Terrestrial RCT-DVB-T [11], which uses turbo convolutional codes with ½ and ¾ rates. The [12] turbo coding is proposed for the Digital Video Broadcasting -Satellite (DVB-S).…”