文件名称:05-3119
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Abstruct- We describe novel interleaver and deinterleaver
architectures that support bandwidth efficient memory access for
decoders of turbo-like codes that are used in conjunction with
high order modulations. The presentation focuses on a decoder
for serially concatenated pulse-position modulation (SCPPM),
which is a forward-error-correction code designed by NASA to
support laser communications from Mars at more than 50 megabits-
per-second (Mbps). For 64-ary PPM, the new architectures
effectively triple the fan-in of the interleaver and fan-out of the
deinterleaver, enabling parallelization that doubles the overall
throughput. The techniques described here can be readily modified
for other PPM orders.
architectures that support bandwidth efficient memory access for
decoders of turbo-like codes that are used in conjunction with
high order modulations. The presentation focuses on a decoder
for serially concatenated pulse-position modulation (SCPPM),
which is a forward-error-correction code designed by NASA to
support laser communications from Mars at more than 50 megabits-
per-second (Mbps). For 64-ary PPM, the new architectures
effectively triple the fan-in of the interleaver and fan-out of the
deinterleaver, enabling parallelization that doubles the overall
throughput. The techniques described here can be readily modified
for other PPM orders.
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05-3119.pdf