COMPUTER FUNDAMENTALS

Detailed explanation-1: -Coherence bandwidth is the range of frequencies over which two frequency components have a strong potential for amplitude correlation.

Detailed explanation-2: -The coherence distance is the distance between transceiver locations over which the channel gain does not change appreciably [6]. This metric is mainly related to the surrounding indoor environment. The coherence time is the characteristic time over which the channel gain does not change appreciably.

Detailed explanation-3: -Doppler spread and coherence time are parameters that describe the frequency-dispersion nature of the mobile channel, and their values with respect to the transmitted signal bandwidth Bs and the symbol duration (period) Ts can help determine if the channel is experiencing fast fading or slow fading.

Detailed explanation-4: -Explanation: Frequency non selective or flat fading occurs if channel coherence bandwidth is greater than the transmitted signal bandwidth.

Detailed explanation-5: -If coherence bandwidth is defined as the frequency interval over which the channel’s complex-valued frequency transfer function has a correlation of at least 0.9, the coherence bandwidth is approximately f c ≈ 1 / ( 50 R M S ) .