[PDF] Top 20 Near-optimal pilot allocation in sparse channel estimation for massive MIMO OFDM systems

... the massive MIMO systems [8] and then propose two efficient pilot allocation methods for the sparse channel ...the near- optimal pilot pattern by ... 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 ... See full document

... is near the global optimal ...wireless channel response h usu- ally consists of a few dominant propagation paths and Equation 2 has a similar form as Equation 6, the estima- tion of h can be viewed ... See full document

... non-orthogonal 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

... the sparse nature of signals (that is, only a small number of components in a signal vector are ...parameter estimation with fewer pilots; thereby, address- ing the pilot contamination problem and ... See full document

... communication systems, efficient use of the spectrum is an indispensable ...(OFDM) sparse multipath channels has been proposed to decrease the transmitted overhead in form of the pilot ... See full document

... beam-domain channel estimation and power allocation in hybrid architecture massive multiple-input and multiple-output (MIMO) communication ...low-complexity channel ... See full document

... CS-based sparse channel estimation can re- construct channel impulse response with less pilot sig- nals to solve the optimization problem, which are far fewer than those required by the ... See full document

... the pilot subcarriers in frequency domain. The estimated channel coefficients are used to detect the rest of the ...subcarriers. MIMO detection is done per ... See full document

... usually sparse, especially for cellular massive MIMO-OFDM systems ...in channel impulse response (CIR) can be regarded as ...the channel delays of all transmit antenna can ... See full document

... compressive channel estimation, it can benefit from the CS technology to reduce the training and feed- back overhead and profit from the priori knowledge about the channel support to improve the ... See full document

... MU massive MIMO requires efficient multi-user interference (MUI) elimination, the transmit precoding is a strategy to ...MU massive MIMO transmission over entire nullspace of other users [12, ... See full document

... for channel estimation in MIMO-OFDM systems has been studied by two di®erent ...the MIMO channel, as described in [50], leading to orthogonal structure for preamble ... See full document

... MU MIMO techniques is proposed in [3]. The author employs LS channel estimation in order to study and evaluate the problems caused by pilot con- tamination to such ...the massive ... See full document

... the channel estimation techniques on the MIMO-OFDM wireless communication system can be roughly classified into the following categories: the least squares algorithm (LS), the linear least ... See full document

... the channel estimation of ...for channel estimation of OFDM as well as MIMO ...latest MIMO OFDM channel estimation which is super resolution approach ... See full document

... of massive BS ...multi-cell massive MIMO ...thus pilot contamination [5-7] occurs in a muti- cell MIMO ...the channel for a particular user, it may obtain a channel ... See full document

... accurate channel estimation. Theypresented some channel estimation techniques that can beused in MIMO-OFDM systems that designed for ...between channel ... See full document

... angular-domain channel vector between the BS and the mth antenna of user ...angular-domain channel is the projection of channel onto the space spanned by the DFT ...domain channel can be ... See full document

... Blind Channel Estimation ...the channel should remain ...of channel estimation for MIMO ...few pilot symbols. Using these pilot symbols, initial estimate of the ... See full document