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- W1974925927 abstract "Self-spreading (SSP) is a spread spectrum technique where the spreading sequence is generated from data bits. Although SSP allows communications with low probability of interception by unintended receivers, despreading by the intended receiver is prone to error propagation. In this paper, we propose both a new transmitter and a new receiver based on SSP with the aim to a) reduce error propagation and b) increase the concealment of the transmission. We first describe a new technique for the generation of SSP spreading sequence, which generalizes SSPs of existing literature. We include also coding at the transmitter, in order to further reduce the effects of error propagation at the receiver. For the receiver, we propose a turbo architecture based on the exchange of information between a soft despreader and a soft-input soft-output decoder. We design the despreader in order to fully exploit the information provided by the decoder. Lastly, we propose a chip decoder that extracts the information on data bits contained in the spreading sequence from the received signal. The performance of the proposed scheme is evaluated and compared with existing spread-spectrum systems." @default.
- W1974925927 created "2016-06-24" @default.
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- W1974925927 date "2006-09-01" @default.
- W1974925927 modified "2023-09-23" @default.
- W1974925927 title "Generalized self spread-spectrum communications with turbo soft despreading and decoding" @default.
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- W1974925927 doi "https://doi.org/10.1109/jcn.2006.6182765" @default.
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