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SUMMARY:(Skills) Everything you wanted to know about revision control but 
 never dared to ask / (Research) Selecting the optimal 8PSK mapping scheme 
 using EXIT charts - David Cottingham and William Carson
DTSTART:20080204T161500Z
DTEND:20080204T171500Z
UID:TALK10650@talks.cam.ac.uk
CONTACT:Andrew Rice
DESCRIPTION:Skills Talk: Everything you wanted to know about revision cont
 rol but never dared to ask\, David Cottingham\n\nI'll give a brief overvie
 w of what revision control is and why it's useful\, then go through the ba
 sics of using a repository (in particular SVN\, which is used in the DTG)\
 , before exploring how you can get yourself into a tangle with branching a
 nd merging (and ways of sorting out [pruning?] the mess). Finally\, I'll i
 ntroduce distributed revision control systems\, with a focus on Mercurial\
 , and try to convince you that you should use that instead of CVS or SVN.\
 n\n\nResearch Talk: Selecting the optimal 8PSK mapping scheme using EXIT c
 harts\,  William Carson\n\nAbstract: We consider a classification scheme t
 hat reduces the number of unique mappings to 86 for the 8PSK constellation
 . Under this scheme\, we select the optimal scheme for our system using ex
 trinsic information (EXIT)\ncharts. We compare the performance of this map
 ping to previously proposed schemes. Finally\, we investigate the tightnes
 s of the binary erasure channel (BEC) to the additive white Gaussian noise
  (AWGN) channel as the a-priori channel required by EXIT charts.
LOCATION:FW26\, William Gates Building
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