[PDF] Top 20 Efficient Bayesian compressed sensing based channel estimation techniques for massive MIMO OFDM systems

... a massive multiple input multiple output (MIMO). A massive MIMO can be defined as a system using a large number of antennas at the base station; accordingly, a significant beamforming can be ... See full document

... The OFDM subcarriers are taken as = 2048, and defend intervening time is = 16 and defer unfold is ...in OFDM image which can be from every transmitted reception device of duration ...wherein channel ... See full document

... for massive MIMO systems, which can be divided into two broad ...Low-rank channel covariance matrices based methods, such as [22–24]—the finite scattering environment and small angular ... See full document

... tems, massive multiuser (MU) multiple-input multiple-output (MIMO) has received more and more attentions ...classical MIMO system, one massive MU-MIMO base station (BS) with lots of ... See full document

... CS based AICs have been proposed for efficient wideband spectrum sensing in ...algorithm, Bayesian framework, blind spectrum detection, cooperative sensing, distributed sensing, ... See full document

... where the bound ε ≥ 0 is used to allow certain error toler- ance. In general, ε is related to the variance of noise w. Unfortunately, the problem in Equation 7 is a NP-hard combinatorial problem, whose computational ... See full document

... scale MIMO systems are thought to be a potential candidate to address various dynamic challenges of fifth generation (5G) communication networks ...multipath MIMO channels exhibit sparse impulse ... See full document

... DCS-based channel estimation methods for MIMO- OFDM systems, the measurement matrix can be con- structed using random pilot ...the estimation accuracy using Restricted ... See full document

... compressive sensing has already been applied for the pilot-based channel estimation in massive multiple input multiple output (MIMO) orthogonal frequency division multiplexing ... See full document

... nel estimation performance is the other key obstacle in front of ...DCS-based channel estimation, the trivial pilot pattern is the random pilot allocation; while utilizing restricted isometry ... See full document

... pilot, compressed sensing has been extensively studied for massive MIMO system ...reconstructing channel state based on training sequences is suitable for multipath ... See full document

... communication systems are valuable for efficient trans- ...spectrum sensing to reduce the spectrum idle rate, while compressed sensing technologies are applied to improve utilization ... See full document

... of Bayesian Gaussian mixture needs to be compared with other estimation ...the channel initiated with the previous information, similar to CS-aided ... See full document

... conventional channel estimation for FDD MIMO systems, the BS firstly sent pilot signals to users in the downlink and each user then conduct their own channel estimation by using ... See full document

... different channel es- timation techniques is simulated and later the proposed scheme performance is analyzed on the basis of the key VLC ...of estimation signals is based on the step ...the ... See full document

... sparse massive MIMO-OFDM channel estimation based on compressed sensing over frequency offset ...new OFDM frame structure, which the major benefit is low ... See full document

... iterative channel estimation (CE) with image recognition is proposed for coded orthogonal recurrence division multiplexing (OFDM) frameworks in quick blurring channels with Doppler frequencies up to ... See full document

... the channel identification ...dimensional MIMO case thanks to their significant ...the MIMO- OFDM ...pilot-based channel estimation CRB while section IV derives the ... See full document

... semiblind channel estimation method for multiple-input multiple-output orthogonal frequency- division multiplexing systems based on circular ...the channel frequency response matrix and ... See full document

... investigate channel estimation method with carrier frequency offset in MIMO-OFDM ...likelihood estimation algorithm (MLE), the carrier frequency offset (CFO) can be ...of ... See full document