Randomized Differential DSSS: Jamming-Resistant Wireless Broadcast Communication

Abstract

Abstract-Jamming resistance is crucial for applications where reliable wireless communication is required. Spread spectrum techniques such as Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) have been used as countermeasures against jamming attacks. Traditional antijamming techniques require that senders and receivers share a secret key in order to communicate with each other. However, such a requirement prevents these techniques from being effective for anti-jamming broadcast communication, where a jammer may learn the shared key from a compromised or malicious receiver and disrupt the reception at normal receivers.In this paper, we propose a Randomized Differential DSSS (RD-DSSS) scheme to achieve anti-jamming broadcast communication without shared keys. RD-DSSS encodes each bit of data using the correlation of unpredictable spreading codes. Specifically, bit "0" is encoded using two different spreading codes, which have low correlation with each other, while bit "1" is encoded using two identical spreading codes, which have high correlation. To defeat reactive jamming attacks, RD-DSSS uses multiple spreading code sequences to spread each message and rearranges the spread output before transmitting it. Our theoretical analysis and simulation results show that RD-DSSS can effectively defeat jamming attacks for anti-jamming broadcast communication without shared keys.

Analysis and optimization on jamming-resistant collaborative broadcast in large-scale networks

“…The following simulation setting is adopted unless otherwise noted: the number of channels C = 64, O = 10bits, L = 300 bits, R = 1kbps, C j = 640/sec, and M = 5. Fig.1 shows the average network broadcast delay (in time slots) for different number of relays 4 . We can see that Collaborative UFH significantly outperforms UFH and appropriate selection of the number of relays further improves the network throughput.…”

“…A common strategy adopted by most works is to introduce randomness on the selection of spreading code sequences in DSSS or hopping channels in FH. Uncoordinated DSSS (UDSSS) [2], Uncoordinated FH (UFH) [3] and Randomized Differential DSSS (RD-DSSS) [4] belong to this category. In UDSSS (resp.…”

A Survey on Cyber Security for Smart Grid Communications

“…Intruders only need to connect to communication channels rather than authenticated networks in the smart grid, it is very easy for them to launch DoS attacks against the smart grid communication networks, especially for the wireless-based communication networks that are susceptible to jamming attacks [39]- [41]. Hence, it is of critical importance to evaluate the impact of DoS attacks on the smart grid and to design effective countermeasures to such attacks.…”

Alibi Framework for Identifying Reactive Jamming Nodes in Wireless LAN

“…However, UDSSS is vulnerable to reactive jamming attacks. RD-DSSS [16] also proposes a similar technique that can be resistant to reactive jamming attacks. BBC [9] proposes a coding approach to encode data to be transmitted into "indelible" marks that can be decoded without any prior knowledge of keys.…”