fading

(redirected from Flat fading)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

fading

(fād′ing)
1. In electronics, signal attenuation.
2. Gradual loss of strength or intensity; degeneration.
3. In education, the stepwise withdrawal of instructional prompts to determine whether a student can perform a new skill on his own.
References in periodicals archive ?
The received signals are undergone additive white guassian noise plus Rayleigh flat fading and Rician flat fading channel.
Following the same procedure as Rayleigh flat fading case, the instantaneous SINR is
Figures 7 and 8 show the average probability of bit error in the received data when code-time diversity is used in Rayleigh flat fading channel.
In this paper, we propose the pilot-added transceiver for CDMA system in flat fading channel in which chaotic sequences are used for spreading the data symbols of various users.
As described in Section 1, we have considered a wireless communication system [23] which employs QAM signals that are transmitted through a flat fading Rayleigh environment.
By using the fact that the DRM+ system suffers from severe flat fading conditions [4], the channels {[H.sub.l,t](k)} are assumed to be frequency-flat and one can build the channel Hl (k) that is periodic with a period of
According to [10], the measured SANET flat fading channel follows the Rician distribution with the K-factor of 15 dB.
However, the channel in each sub-carrier is narrow enough to experience flat fading. We denote [r.sub.k,n] as the transmission rate of user k on sub-carrier n.
2 and 3 show the uncoded error distribution in the time-frequency-plane for transmission over a flat fading channel with CDD and without CDD, respectively.
4 shows the BER / PER performance over a flat fading channel with different cyclic delay values.
7 shows the BER performance of the conventional CDD-OFDM system without precoding over flat fading, Ped A, and Veh A channels, respectively.
For a BER of [10.sup.-4], a gain of 6.4 dB and 6.2 dB is obtained in a flat fading channel with a mobility of 3 km/h and the Ped A channel, respectively.