precoding
RSS precodingAlgorithms for Quantized Precoding in MIMO OFDM Beamforming Systems
White Paper Multiple Input Multiple Output (MIMO) wireless systems can offer significant diversity and transmit beamforming with receive combining provides a method to achieve this diversity with simple receive processing. [11 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]
Linear OFDM Precoder Design for Multiuser Wireless Communications Using Cutoff Rate Optimization
White Paper In this paper, a linear precoding technique is proposed in order to solve this problem. Multiuser wireless communications based on Orthogonal Frequency Division Multiplexing (OFDM) technique have two pronouncing advantages. [11 Apr 2007]
A Non-Linear Precoding Technique for Downlink MC-CDMA
White Paper Both burdens can be answered in the downlink by precoding the signal with the knowledge of the channel state information. The results show for a SISO system a significant improvement over recent proposed precoding schemes. [16 Feb 2006]
Space-Time Pre-RAKE Multiuser Transmitter Precoding for DS/CDMA Systems
White Paper A novel linear precoding method that combines Multiuser Interference (MAI) cancellation, pre-RAKE filtering and Transmitter (Tx) antenna diversity is proposed for the downlink of the Code Division Multiple Access (CDMA) channel. [06 Oct 2005]
Performance Analysis of Tomlinson-Harashima Multiuser Precoding in Multipath CDMA Channels
White Paper Tomlinson-Harashima multiuser precoding (THP) is a transmitter (Tx)-based multiple access interference (MAI) cancellation technique for Direct Sequence (DS) Code-Division Multiple Access (CDMA) systems. [06 Oct 2005]
Nonlinear Multiuser Precoding for Downlink DS-CDMA Systems Over Multipath Fading Channels
White Paper This paper proposes a Transmitter (Tx)-based nonlinear decorrelating interference cancellation method, Tomlinson-Harashima precoding (THP), to combat multiple access interference (MAI) for the downlink of Direct Sequence Code Division Multiple... [06 Oct 2005]
Performance Analysis of Space-Time Transmitter Diversity Techniques for W-CDMA Using Long Range Prediction
White Paper Pre-RAKE precoding at the transmitter can be employed to achieve the multipath diversity without the need of the RAKE receiver at the mobile station. This paper examines feasibility of several transmitter diversity techniques and precoding for the... [06 Oct 2005]
A Space-Time Pre-RAKE Transmitter Diversity Method for W-CDMA Using Long Range Prediction
White Paper Pre-RAKE precoding at the transmitter can be employed to achieve the multipath diversity without the need of the RAKE receiver at the mobile station. Transmitter diversity in the downlink for Code Division Multiple Access (CDMA) systems provides a... [06 Oct 2005]
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]
Linearly Precoded OFDM System With Adaptive Modulation
White Paper This paper considers the linear precoded OFDM approach proposed in, where a non-redundant precoding was applied to the symbol blocks before entering the OFDM system. The precoding, while maintained the transmit power, introduced a structure to the... [21 Jul 2005]
Orthogonal Frequency Division Multiplexing for Wireless Communications
White Paper In particular the paper addresses the following aspects of OFDM: inter-carrier interference (ICI) suppression, co-channel interference suppression for clustered OFDM, clustered OFDM based anti-jamming modulation, channel estimation for MIMO-OFDM... [21 Jul 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]
Blind Equalization in OFDM-Based Multi-Antenna Systems
White Paper The approach presented in this paper employs nonredundant antenna precoding, uses second-order cyclostationary statistics, and yields unique estimates (up to a phase rotation for each symbol stream). Wireless systems employing multiple antennas at... [28 Mar 2005]
Linear Space-Time Precoding for OFDM Systems Based on Channel State Information
White Paper A new linear space-time precoding scheme for OFDM systems is developed based on channel state information at the transmitter. The filter is derived for frequency-selective MISO as well as for SISO channels using a minimum mean square error... [01 Nov 2004]
