Abstract:

A cooperative compressed spectrum sensing with low cost is proposed. Each cognitive user derives the measurements as the sign information of the compressed samples by using 1-bit quantization. After receiving the sign information from different cognitive users, the fusion center will utilize two joint sensing algorithms to determine the occupancy of the spectrum. Simulations show that the proposed scheme has a preferable performance, which is not only better than that of independent sensing, but also better than the sensing scheme based on multi-bit quantization at low signal-to-noise ratio.

Key words: cognitive radio, cooperative spectrum sensing, compressed sensing, 1-bit quantization