{ "item_title" : "Signal Processing Design of Low Probability of Intercept Waveforms via Intersymbol Dither", "item_author" : [" Nathaniel Christian Liefer "], "item_description" : "This thesis investigates a modification to Differential Phase Shift Keyed modulation to create a low Probability of Interception/Exploitation communications signal. A Pseudodorandum timing offset is applied to each symbol in the communications stream to intentionally create intersymbol interference that hinders accurate symbol estimation and bit sequence recovery by a non-cooperative receiver. Two cooperative receiver strategies are proposed to mitigate the ISI due to symbol timing offset: a modified minimum Mean Square Error equalization algorithum and a multiplexed bank of equalizer filters determined by an adaptive Least Mean Square algorithum. Numermical simulation is used to demonstrate the bit error rate performance of cooperative receiversand notional non-cooperative receivers. Simulation results suggest that proper selection of pulse of pulse shape and probability distribution of symbol timing offsets produces a waveform that is accurately demonstrated by the proposed cooperative receivers and significantly degrades non-cooperative receiver symbol estimation accuracy.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/28/830/730/1288307306_b.jpg", "price_data" : { "retail_price" : "17.95", "online_price" : "17.95", "our_price" : "17.95", "club_price" : "17.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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