precoding block
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Recursive and Trellis-Based Feedback Reduction for MIMO-OFDM With Rate-Limited Feedback
White Paper Depending on the channel realization, the receiver selects the optimal beamforming vector or precoding matrix from a finite-size codebook on each subcarrier, and informs the transmitter through finite-rate feedback. [13 Apr 2007]
Blind OFDM Channel Estimation Through Simple Linear Precoding
White Paper A linear transformation is applied on each block before it enters the OFDM system. A novel approach of blind channel estimation for OFDM systems is proposed. The transform imposes a correlation structure on the transmitted blocks, which is... [13 Apr 2007]
Semi-Blind Channel Estimation for Block Precoded Space-Time OFDM Transmissions
White Paper With known pilots inserted before precoding, the authors resolve the residual scalar ambiguities and show that distinct precoders require less pilots than identical precoders to achieve the same channel estimation accuracy. [11 Apr 2007]
Asymptotic Performance Analysis for Redundant Block Precoded OFDM Systems With MMSE Equalization
White Paper Linear Precoding consists in multiplying by a N x K matrix a K-dimensional vector obtained by serial to parallel conversion of a symbol sequence to be transmitted. A multi-carrier OFDM system using a Cyclic Prefix for preventing inter-block... [26 Jul 2005]
Blind Channel Estimation in MIMO OFDM Systems
The paper proposes a linear non-redundant block precoding scheme, that is applied at the input of the OFDM system. Multiantenna wireless systems have shown great promise in achieving high rates. This paper considers an OFDM multiple transmit... [30 Mar 2005]
Space-Time Block-Coded OFDMA With Linear Precoding for Multirate Services
The approach presented in this paper is based on a three-level design of user codes: the top level (based on OFDMA) handles multiuser interference, the middle level (based on space-time block coding) results in space-time diversity gains, and the... [28 Mar 2005]
Space-Time Block-Coded OFDMA With Linear Precoding for Multirate Services
White Paper The approach presented in this paper is based on a three-level design of user codes: the top level (based on OFDMA) handles multiuser interference, the middle level (based on space-time block coding) results in space-time diversity gains, and the... [28 Mar 2005]
Transmit-Antennae Space-Time Block Coding for Generalized OFDM in the Presence of Unknown Multipath
White Paper Relying on block precoding, this paper develops generalized space-time coded multicarrier transceivers appropriate for wireless propagation over frequency-selective multipath channels. Multicarrier precoding maps the frequency-selective channel... [29 Oct 2004]
