Lattice-Based Coding to Enhance Error Performance of the Hidden Direct Sequence Spread Spectrum
Nader Sanandaji, Abolfazl Falahati · IETE Journal of Research · 2019
A direct sequence spread spectrum is employed together with a lattice coding scheme to enhance physical layer security and efficiency of a wireless communication system against the denial of service attacks, due to the presence of deliberate unwanted interferences. Based on the results, using a direct sequence spread spectrum together with a random “construction A” lattice coding scheme named “DSSS/RCA” can highly improve the error performance compared with similar methods. Regarding a typically large block code length, some constraints on the coding rate and average signal to noise ratio are drawn to guarantee a block error probability which is asymptotically close to zero. Also, the secrecy capacity of DSSS/RCA is investigated and the achievability of perfect secrecy is verified.