Secrecy gain of Gaussian wiretap codes from unimodular lattices
We consider lattice coding over a Gaussian wiretap...
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Main Authors: | , |
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Other Authors: | |
Format: | Conference or Workshop Item |
Language: | English |
Published: |
2012
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/93876 http://hdl.handle.net/10220/7450 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | We consider lattice coding over a Gaussian wiretap
channel, where an eavesdropper listens to the transmissions
between a transmitter and a legitimate receiver. In [1], a new
lattice invariant called the secrecy gain was introduced as a code
design criterion for wiretap lattice codes, shown to characterize
the confusion that a chosen lattice code can cause at the
eavesdropper: the higher the secrecy gain of the lattice, the
more confusion. In this paper, a formula for the secrecy gain
of unimodular lattices is derived. Secrecy gains of extremal odd
unimodular lattices as well as unimodular lattices in dimension
16 are computed and compared. Finally, best wiretap lattice codes
coming from unimodular lattices in dimension n, 8 ≤ n ≤ 16
are classified. |
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