This paper proposes an energy detection scheme based on short windows to detect the presence of a burst signal that spans over a short period of time. For practical use, the proposed scheme provides a simple computational method for the threshold, with which the measured energy is compared, that satisfies a target false alarm probability and also the optimal length of the short window that minimizes miss detection probability. To evaluate the performance of the proposed scheme, miss detection probability is analyzed as a function of the threshold. Simulation results demonstrate that the proposed scheme provides a lower miss detection probability than the conventional scheme when a burst signal is present.

This paper proposes a new test method of detecting the presence of impulsive noise based on a complementary cumulative density function (CCDF). Impulsive noise severely degrades performance of communication systems and the conventional Kolmogorov–Smirnov (K–S) test may not perform well, because the test does not consider the characteristics of impulsive noise. In order to detect the presence of impulsive noise reliably, the CCDF of measurement samples is analyzed and compared with the CCDF of additive white Gaussian noise to find the difference between those CCDFs. Due to the nature of heavy-tails in impulsive noise, only the maximum difference may not be sufficient for the accurate detection of impulsive noise. Therefore, the proposed method applies the test hypothesis using the weighted sum of all the differences between those CCDFs. Simulation results justify that the proposed test is more robust and provides lower miss detection probability than the K–S test in the presence of impulsive noise.

Ad-hoc network based on MIL-STD-188-220 is utilized in military communications systems. Since capacity of battery built in military communications systems is limited, efficient energy consumption needs to be considered. For the energy consumption, this paper proposes simple energy saving scheme for ad-hoc network based on MIL-STD-188-220. The proposed scheme utilizes a time gap between preamble and data, so it allows a simple design for MIL-STD-188-220. In addition, energy consumption and slot duration of the proposed scheme are analyzed. Simulation results show good trade-off between energy saving and slot duration of the proposed scheme.