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- W2113303842 abstract "A turbo code codec is implemented as a portion of a modem in a software radio. The performance of this software radio is tested in a Monte Carlo simulation and on a hardware testbed. The codec uses two punctured rate 1/2 constituent codes and a 16383-bit pseudo-random interleaver to produce a net rate /spl sim/1/2 turbo code. The modem generates a binary phase-shift keyed modulation on a 200 kHz carrier. Frame headers are inserted between interleaver blocks for synchronization of the receiver's deinterleaver and to detect loss of carrier or symbol synchronization. Bit error rate performance curves are reported. The Monte Carlo simulation shows an implementation loss of about 0.5 dB at threshold (i.e., an E/sub b//N/sub 0/ of about 1 dB). This implementation loss is attributed to carrier and bit synchronization errors. The hardware testbed displayed a total implementation loss of about 2.5 dB. The additional 2 dB loss over the Monte Carlo results can be attributed to detector mismatch and intersymbol interference caused by unmodeled band-limiting filters of the hardware. Some of these filter-induced losses should be recoverable if an equalizer is added to the modem software." @default.
- W2113303842 created "2016-06-24" @default.
- W2113303842 creator A5003694392 @default.
- W2113303842 date "2003-01-20" @default.
- W2113303842 modified "2023-09-24" @default.
- W2113303842 title "Turbo code codec implementation and performance in a software radio" @default.
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- W2113303842 doi "https://doi.org/10.1109/milcom.1999.822737" @default.
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