Results 201 to 210 of about 33,097 (233)

Trellis precoding: combined coding, precoding and shaping for intersymbol interference channels

IEEE Transactions on Information Theory, 1992
Summary: On a linear Gaussian channel with intersymbol interference (ISI), trellis precoding is a method that achieves the equalization performance of Tomlinson-Harashima (TH) precoding, the coding gain of any known lattice- type coset code, and a considerable shaping gain.
Eyuboǧlu, M. Vedat, Forney, G. David jun.   +1 more
openaire   +1 more source

Circulantly precoded OFDM

2016 IEEE/CIC International Conference on Communications in China (ICCC), 2016
Intercarrier interference (ICI) caused by time variance of wireless channels is one of the critical issues faced in orthogonal frequency division multiplexing (OFDM). Conventionally, correlative precoder has been proposed and widely considered to be effective in ICI self-cancellation. However, correlatively precoded OFDM waveforms entail increased peak-
Yen-Chin Wang, Po-Heng Chou, Char-Dir Chung   +2 more
openaire   +1 more source

A Linear Precoding Scheme for Downlink Multiuser MIMO Precoding Systems

IEEE Communications Letters, 2011
In this letter, we propose a low complexity linear precoding scheme for downlink multiuser MIMO precoding systems where there is no limit on the number of multiple antennas employed at both the base station and the users. In the proposed algorithm, we can achieve the precoder in two steps.
null Hualei Wang, null Lihua Li, null Lei Song, null Xiangchuan Gao   +3 more
openaire   +1 more source

Filterbank precoders for blind equalization: polynomial ambiguity resistant precoders (PARP)

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2001
Filterbank precoding in the intersymbol interference (ISI) mitigation has recently attracted much attention. Two main areas of such research have been explored. One of them is on filterbank precoding when the ISI channel is known to both the transmitter and the receiver, while the other is on filterbank precoding when the ISI channel is not known to ...
null Xiang-Gren Xia, null Weifeng Su, null Hui Liu   +2 more
openaire   +1 more source

Pseudo-random phase precoded spatial modulation and precoder index modulation

2014 IEEE Global Communications Conference, 2014
Spatial modulation (SM) is a transmission scheme that uses multiple transmit antennas but only one transmit RF chain. At each time instant, only one among the transmit antennas will be active and the others remain silent. The index of the active transmit antenna will also convey information bits in addition to the information bits conveyed through ...
T. Lakshmi Narasimhan, Yalagala Naresh, Tanumay Datta, A. Chockalingam   +3 more
openaire   +1 more source

Multiuser Precoding Designs

2014
This chapter presents some of the current state-of-the-art precoding designs in MIMO wireless communications, which serve as the background for the development of precoding designs in CoMP systems in subsequent chapters. The first part of this chapter discusses precoding techniques in multiuser (MU) single-cell systems under two design objectives ...
Duy H. N. Nguyen, Tho Le-Ngoc
openaire   +1 more source

Orthogonal superimposed training on linear precoding: a new affine precoder design

IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, 2005., 2005
Wireless communication systems usually use a training sequence for identifying the channel. The training sequence is sent during time-slots different from those of the signal. An advantage of this transmission scheme is that the channel estimation and the signal detection are independent.
D.H. Pham, J.H. Manton
openaire   +1 more source

Securely Precoded OFDM

2018
In this chapter, we continue our discussions on anti-jamming OFDM system design. While the collision-free frequency hopping (CFFH)-based OFDM is very effective in combating partial-band jamming, it is still fragile under disguised jamming, where the jammer mimics the characteristics of the authorized signal.
Tongtong Li, Tianlong Song, Yuan Liang
openaire   +1 more source

Zero-forcing Precoder: A Special Constructive Interference Precoder for PSK Signals

2019 53rd Asilomar Conference on Signals, Systems, and Computers, 2019
Recently, constructive interference precoders have been considered for downlink communication systems to utilize the multiuser interference constructively. Such precoders are normally obtained by solving constrained optimization problems at each symbol period. We demonstrate that there exists an analytic solution to a constructive interference precoder
Yanwu Ding, Khanh Pham
openaire   +1 more source