Digital Signal Processing

1801 Submissions

[2] viXra:1801.0180 [pdf] submitted on 2018-01-15 23:17:51

Energy-Efficient Two-Way Relaying with Multiple Antennas

Authors: Thanaphat Srivantana, Kiattisak Maichalernnukul
Comments: 4 Pages.

In this paper, we propose various kinds of energy-efficient two-way multi-antenna relaying with simultaneous wireless information and power transfer (SWIPT) and investigate their performance. Specifically, we first consider a two-way relay network where a pair of single-antenna end nodes communicate with each other through a multi-antenna relay node that is energy constrained. This relay node harvests energy from the two end nodes and use the harvested energy for forwarding their information. Three relaying schemes which support the considered network then build on the power splitting-based relaying protocol. The average bit error rates of these schemes are evaluated and compared by computer simulations considering several network parameters, including the number of relay antennas and the power splitting ratio. Such evaluation and comparison provide useful insights into the performance of SWIPT-based two-way multi-antenna relaying.
Category: Digital Signal Processing

[1] viXra:1801.0137 [pdf] submitted on 2018-01-12 12:03:09

Cozmo a New Lightweight Stream Cipher

Authors: Rhea Bonnerji, Simanta Sarkar, Krishnendu Rarhi, Abhishek Bhattacharya
Comments: 8 Pages.

This paper deals with the merger of the two lightweight stream ciphers – A5/1 and Trivium. The idea is to make the key stream generation more secure and to remove the attacks of the individual algorithms. The bits generated by the Trivium cipher (output) will act as the input of the A5/1 cipher. The registers used in the A5/1 cipher will be filled by the output bits of the Trivium cipher. The three registers will then be connected to generate an output which will be our required key stream. we are using Trivium and A5/1 algorithm and making changes to suit our needs.
Category: Digital Signal Processing