Decoupled maximum likelihood channel estimator for space time block coded system

... STBC space- time block codes STTC space- time trellis codes LST layered space- time USTM unitary space- time modulation CSI channel state information DEML decoupled maximum likelihood ML maximum likelihood ... efficient channel estimation scheme based on the decoupled maximum likelihood (DEML) algorithm is introduced for space- time block coded (STBC...

Ngày tải lên: 04/10/2015, 10:26

... verifications of those models 32 Chapter BEP Performance Analysis of Orthogonal Space- Time Block Codes We present a symbol-by-symbol, channel estimation receiver for a space- time block coded system, ... incorporated with channel estimation more preferable in practice The objective of our research is to develop such a receiver with channel estimation and...

Ngày tải lên: 16/09/2015, 08:31

... bits), LS (M = 26 bits), and known channel Turbo ST receivers We formulate the ML estimation problem that takes into account the deterministic symbols corresponding to the training sequence and ... our channel estimation technique enables us to diminish the training sequence length up to only bits, instead of the 26 bits considered in the GSM standard, thus achieving a 1...

Ngày tải lên: 23/06/2014, 01:20

... Blind Channel Estimation for Space-Time Coded WCDMA channel estimation in such a wideband system is twofold First, the WCDMA is a multirate system where the ... Fortunately, WCDMA also offers signal structures that could be exploited in an estimation scheme Blind estimation or detection algorithms have been proposed for space-time coded CDMA systems For ......

Ngày tải lên: 22/06/2014, 23:20

... original single-antenna DS-CDMA downlink scheme, resulting into so-called space-time block coded DS-CDMA downlink schemes As an example, we mention the space-time block coded DS-CDMA downlink schemes ... proposed space-time chip equalizer for the proposed space-time coded downlink CDMA transmission scheme with the space-time RAKE receiver for the space...

Ngày tải lên: 23/06/2014, 01:20

... constrained to P, and it is assumed that the transmitters cooperate to provide a distributed spacetime block encoder, and that the channel coefficients remain constant during the transmission of a space-time ... D-STBCs, SIMO subchannels, and distributed MIMO channel with two receive antennas, versus the channel estimation error variance of the first subchannel, that is,...

Ngày tải lên: 22/06/2014, 19:20

... MC -CDMA IEEE Trans Signal Process 55(10), 4737–4751 (2007) doi:10.1186/1687-1499-2011-80 Cite this article as: Medina and Sampaio-Neto: Frequency domain equalization space-time block-coded CDMA ... ratio combiner; OFDM: orthogonal frequency division multiplexing; RLS: recursive least squares; SC-FDE: single-carrier frequency- domain equalization; STBC: space-time block-...

Ngày tải lên: 21/06/2014, 00:20

... estimates of the signal interference) TURBO SPACE-TIME RECEIVERS WITH RATE COMPATIBLE PUNCTURED TURBO (RCPT) CODES The RCPT encoder will turbo encode the input data sequence of length Lin into a coded ... characteristic of turbo codes Rate compatible punctured turbo codes are investigated in a turbo space-time coded MIMO-CDMA system as a possible way of achiev...

Ngày tải lên: 21/06/2014, 23:20

... MIMO Systems and Space- Time Coding 1.1.1 Background of MIMO Systems 1.1.2 Introduction to Space- Time Coding Space- Time Block Codes over General Fading ... DESIGN AND PERFORMANCE ANALYSIS OF MIMO SPACE- TIME BLOCK CODING SYSTEMS OVER GENERAL FADING CHANNELS HE JUN (B Eng., Zhejiang University, P.R.China) A THESIS SUBMITTED FOR...

Ngày tải lên: 14/09/2015, 14:05

... ON THE PERFORMANCE AND CAPACITY OF SPACE- TIME BLOCK CODED MULTICARRIER CDMA COMMUNICATION SYSTEMS HU XIAOYU (B Eng, M Eng) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... combination - STBC MCCDMA as the candidate of radio techniques for the next generation wireless communication system In the thesis, we concentrate the research on...

Ngày tải lên: 16/09/2015, 15:54

... is reduced when carrier frequency offset exsists Hence the performance of the OFDM systems is degraded In order to improve the performance of OFDM systems, the carrier frequency offset must be ... receiver (MIMO) technology in combination with OFDM, i.e., MIMO- OFDM, therefore becomes an attractive solution for future broadband wireless systems Similar to SISO -OFDM...

Ngày tải lên: 04/10/2015, 10:26

Ngày tải lên: 24/04/2014, 17:20

... ensure that a given Alamouti block ij S4t appears on the same group of transmitter antennas (i.e., in the same column of the matrix), such that they can provide similar performance as the codes ... The major contributions of the method are that the transmission signals can maintain constant amplitude, and avoid signal constellation expansion They also have a linear signal detector wi...

Ngày tải lên: 22/06/2014, 19:20

... proposed estimator with the standard NLMS channel estimator, the earlier proposed detection-guided NLMS channel estimator [8], the standard APA channel estimator [1] as well as the standard FAP channel ... detection-guided NLMS channel estimator (as presented in Section 3.2) (C) APA channel estimator with N = 10 (D) FAP channel estimator with N = 10 (E) Active-p...

Ngày tải lên: 22/06/2014, 19:20

... with the increase in the MT symbol duration) that results from the increase in the number of tones, the performance gain starts to saturate In the practical setting, in increasing the number of tones, ... encountered as the number of tones increases This can be explained in the following way With the increase in the number of tones, the transmitted symbol d...

Ngày tải lên: 22/06/2014, 23:20