Results 261 to 270 of about 60,674 (300)

High Rate Space Time Block Codes

IEICE Transactions on Communications, 2006
High Rate Space-Time Block Codes (HR-STBCs) with greater than 1 symbol/transmission and simple decoding schemes are proposed. The HR-STBC demonstrates 3 dB E b /N 0 gain at BER = 10 -3 compared with the conventional STBC when three transmit antennas and two receive antennas are utilized.
Jaehak Chung, Seung Hoon Nam, Chan-Soo Hwang   +2 more
openaire   +1 more source

Shift-orthogonal space-time block codes

IEEE Transactions on Communications, 2010
In this paper, we present a new class of spacetime block code, called shift-orthogonal space-time block codes (SOSTBC), which can maintain orthogonality (hence symbolwise linear decoding) in asynchronous wireless relay networks, under both amplify-and-forward (AF) and decode-and-forward (DF) relaying schemes.
Tian Peng Ren, Yong Liang Guan 0001, Erry Gunawan, Er Yang Zhang   +3 more
openaire   +1 more source

Closed loop space-time block code

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
In 3GPP FDD specifications, space time transmit diversity (STTD) employs space-time block code (STBC) to maintain orthogonality between the two antennas in order to avoid self-interference in fading channels. However, the STTD technique is just open loop transmit diversity, and we investigate whether we can obtain further gain if closed loop STBC is ...
Xiaofeng Tao 0001, Harald Haas, Zhuizhuan Yu, Haiyan Qin, Ping Zhang 0003   +4 more
openaire   +1 more source

Space-time block codes for noncoherent CPFSK

IEEE Transactions on Wireless Communications, 2010
In this paper the problem of space-time block coding for multiple-input multiple-output communication systems employing continuous phase frequency shift keying and one-shot noncoherent detection is investigated. First, the detection problem is analysed in a maximum likelihood perspective; then, design criteria for optimal space-time codes are proposed ...
PANCALDI, Fabrizio, BARBIERI, Alessandro, VITETTA, Giorgio Matteo   +2 more
openaire   +2 more sources

Orthogonal Space-Time Block Codes with Feedback

Wireless Personal Communications, 2004
In this paper we consider how Orthogonal Space-Time Block Codes (OSTBC) can be used in the presence of feedback from the receiver to the transmitter. First, we survey how some of the feedback techniques for AWGN channels with fading can be applied to OSTBC. Then we consider a simple scheme with diagonal weighting. The optimal diagonal weighting matrix,
Girish Ganesan, Petre Stoica, Erik G. Larsson   +2 more
openaire   +1 more source

Block Coded Modulation for Space-Time Signaling

2006 IEEE International Symposium on Information Theory, 2006
This paper presents a method for increasing the coding gain of all varieties of space-time block codes (STBC), without using a trellis or introducing dependency between successive transmission blocks, using ideas from Block-Coded Modulation (BCM). For a given STBC, we first increase the constellation size, then prune the codewords of the expanded ...
Mohammad Janani, Aria Nosratinia
openaire   +1 more source

On an Orthogonal Space-Time-Polarization Block Code

Journal of Communications, 2009
Over the past several years, diversity methods such as space, time, and polarization diversity have been successfully implemented in wireless communications systems. Orthogonal space-time block codes efficiently combine space and time diversity, and they have been studied in detail.
Beata J. Wysocki, Tadeusz A. Wysocki, Sarah Spence Adams   +2 more
openaire   +1 more source

Power adaptation in space-time block code

GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270), 2002
Transmission power adaptations are considered in a space-time block code (STBC) system utilizing feedback channel gain information. We investigate the optimal power adaptation scheme that minimizes the average BER subject a fixed average transmission power constraint.
Myeongsook Seo, Sang Wu Kim
openaire   +1 more source

Space-Time Block Coding for Wireless Communications

2003
Space-time coding is a technique that promises greatly improved performance in wireless networks by using multiple antennas at the transmitter and receiver. Space-Time Block Coding for Wireless Communications, first published in 2003, is an introduction to the theory of this technology.
Erik G. Larsson, Petre Stoica
openaire   +1 more source

Differential space-time block-diagonal codes

Science in China Series F: Information Sciences, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhendong Luo, Yuanan Liu, Jinchun Gao
openaire   +1 more source