Modified Slow Fading Channel Estimation Technique And Fast Fading Channel Estimation Technique For OFDM Systems

Samanta, Sukanya; Sridha, T. Venkata

doi:10.1109/rteict42901.2018.9012125

Cited by 6 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A general method for obtaining CSI is that high power nodes or remote radio heads send downlink pilots in predefined order at different time slots so that the terminal can receive and estimate channel parameters [16]. In wireless communication systems, we get channel characteristics from the CSI, which represents the composite effects of scattering, fading, power delay, etc [17]. Accordingly, accurate channel estimation is of significant importance for this system [18].…”

Section: Introductionmentioning

confidence: 99%

Channel estimation for backscatter communication systems with retrodirective arrays

Mu,

Yao,

Fan

et al. 2024

IET Communications

View full text Add to dashboard Cite

Backscatter communications, which originated from World War II, have been widely applied in the logistics domain, and recently attract emerging interest from both academic and industrial circles. Here, the backscatter communication systems equipped with retrodirective arrays that can re‐transmit the impinging signals back toward the direction of incidence are studied so as to reduce the power loss of the signals. Specifically, the authors consider the tag is equipped with retrodirective arrays to improve reliability and enhance communication range. The probability density function of channel coefficients is then derived. Next, a channel estimator based on Bayesian theory is proposed to acquire the modulus values of channel parameters and calculate its Bayesian Cramer–Rao Lower Bound. Finally, simulation results are provided to corroborate these theoretical studies.

show abstract

Section: Introductionmentioning

confidence: 99%