Computer Science – Performance
Scientific paper
Aug 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974oppt.workr....m&link_type=abstract
In Dynatrend, Inc. Proc. of Outer Planet Probe Technol. Workshop, Sect. 1 through 11 14 p (SEE N75-20358 12-12)
Computer Science
Performance
Atmospheric Entry, Channels (Data Transmission), Coding, Performance Prediction, Planetary Atmospheres, Convolution Integrals, Data Acquisition, Space Probes, Viterbi Decoders
Scientific paper
The planetary entry channel is modeled for communication purposes representing turbulent atmospheric scattering effects. The performance of short and long constraint length convolutional codes is investigated in conjunction with coherent BPSK modulation and Viterbi maximum likelihood decoding. Algorithms for sequential decoding are studied in terms of computation and/or storage requirements as a function of the fading channel parameters. The performance of the coded coherent BPSK system is compared with the coded incoherent MFSK system. Results indicate that: some degree of interleaving is required to combat time correlated fading of channel; only modest amounts of interleaving are required to approach performance of memoryless channel; additional propagational results are required on the phase perturbation process; and the incoherent MFSK system is superior when phase tracking errors are considered.
No associations
LandOfFree
Convolutional code performance in planetary entry channels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Convolutional code performance in planetary entry channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Convolutional code performance in planetary entry channels will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1465341