Robust synchronization and channel estimation for MIMO OFDM systems

... re-modulation is robust to the channel order over -estimation, and the channel estimation identifiability is guaranteed for random channel realization Moreover, the method is applicable for MIMO OFDM systems ... BERs for SISO OFDM under different p 94 ¯ 5.4 Performance NMSEs for MIMO OFDM versus SNR 5.5 Performance NMSEs for MIMO OFDM versus number of snap...

Ngày tải lên: 14/09/2015, 11:54

... 21, 24] In this paper, we propose a joint synchronization, channel estimation, and decoding turbo processing scheme for coded MIMO-OFDM systems in the presence of quasistatic multipath channels, ... These interrelations are further explored to develop the turbo joint channel estimation, synchronization, and decoding scheme in Section 4, and the vect...

Ngày tải lên: 21/06/2014, 23:20

... that is system capacity In Chapter 5, the MIMO -OFDM system capacity with imperfect feedback channel is investigated In Chapter 6, the capacity variances for OFDM systems over Rayleigh and Ricean ... 6) Chapter 2: OFDM systems and MIMO systems Since the thesis studies the channel estimation for OFDM systems and system capacity for MIMO -OFDM sy...

Ngày tải lên: 20/11/2012, 11:28

... this thesis is the development of three blind channel estimation and one blind source separation algorithms for MIMO- OFDM systems The first proposed channel estimation algorithm is a subspace based ... BLIND CHANNEL ESTIMATION FOR MIMO OFDM COMMUNICATION SYSTEMS CHEN XI (M.Sc., National University of Singapore, Singapore) A THESIS SUBMITTED FOR THE DEGREE...

Ngày tải lên: 12/09/2015, 09:17

... for a MIMO- OFDM system in wideband frequency selective MIMO channels, and more specifically the appropriate spacetime precoding schemes and transmitter and receiver designs for a MIMO- OFDM system ... near-optimal capacity and diversity performance in MIMO- OFDM channels, optimal and efficient detection and decoding of transmitted sequence at the receiver, and opti...

Ngày tải lên: 15/09/2015, 17:10

... al, MultiBand OFDM Physical Layer Proposal for IEEE802.15.3a MultiBand OFDM Alliance SIG (2004) A Batra, J Balakrishnan, GR Aiello, JR Foerster, A Dabak, Design of a multiband OFDM system for ... WF performance Conclusion In this paper, an adaptive FIC RR-WF channel estimation algorithm is proposed for the MB -OFDM UWB communication systems This RR-WF-based algorithm...

Ngày tải lên: 20/06/2014, 22:20

... al, MultiBand OFDM Physical Layer Proposal for IEEE802.15.3a MultiBand OFDM Alliance SIG (2004) A Batra, J Balakrishnan, GR Aiello, JR Foerster, A Dabak, Design of a multiband OFDM system for ... WF performance Conclusion In this paper, an adaptive FIC RR-WF channel estimation algorithm is proposed for the MB -OFDM UWB communication systems This RR-WF-based algorithm...

Ngày tải lên: 21/06/2014, 00:20

... shiftinvariant algorithms, and investigate their applications in joint synchronization and channel identification for UWB signals These p-rank algorithms will be referred to as reduced-rank identification ... The performance can act as a basis for evaluating the performance loss in many applications of RIPC algorithms Simulation results of the joint synchronization an...

Ngày tải lên: 21/06/2014, 23:20

... FFT processors and aim to offer an FFT IP generator that has the capability of automatic wordlength optimization to achieve hardware efficiency The IP generator can generate the hardware description ... used in advanced systems With our proposed architecture, the advantage is twofold On one hand, the same control flow as the one needed for generation of multiple-channel FFT p...

Ngày tải lên: 21/06/2014, 08:20

... matrix at the RX side is given by SPATIAL CHANNEL MODELLING The 3GPP SCM model is serving as the basis for evaluation of MIMO performance of candidate MIMO concepts for UMTS [4] In the following ... 3GPP SCM model and the modified SCM for a × MIMO case In each case of comparison, the RMS angular spreads of the basic and modified SCM models were set to be equal Thus, at l...

Ngày tải lên: 22/06/2014, 06:20

... 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

... …………………………………………………… 47 3.6 Sequential Monte Carlo Methods …………………………… 51 2.3.2 2.3.3 Iterative Receiver Design for MIMO- OFDM Systems via Sequential Monte Carlo (SMC) techniques ………………………… 53 ... ITERATIVE RECEIVER DESIGN FOR MIMO- OFDM SYSTEMS VIA SEQUENTIAL MONTE CARLO (SMC) TECHNIQUES BAY LAY KHIM (B.Eng.(Hons.), NUS) A THESIS SU...

Ngày tải lên: 08/11/2015, 17:16

... SISO-OFDM The BER is degraded due to the frequency offset and channel estimation errors For a fixed channel estimation variance error σΔH , a larger variance of frequency offset estimation error, ... 1025– 1030, 2009 [32] Z Zhang, W Zhang, and C Tellambura, “BER of MIMOOFDM systems with carrier frequency offset and channel estimation errors,” in Proceedings...

Ngày tải lên: 21/06/2014, 11:20

... necessary and sufficient information to estimate the channel Therefore, the observations that are used to estimate the channel in CPOFDM and ZP-OFDM are the FFT outputs corresponding to the pilot ... signal, and then the N samples from the data part are applied to an FFT, while the guard interval samples are not transformed In both cases, the used transfor...

Ngày tải lên: 22/06/2014, 19:20

... columns of a fast Fourier transform (FFT) matrix For a nonsingular spatial interference correlation matrix, we set N ≤ r L Channel Estimation and Data Detection for MIMO Systems 691 [16] to guarantee ... in channel estimation and data detection (a) perfectly known channel parameters and interference statistics, with one-vector-symbol (curve 1) and twovector-s...

Ngày tải lên: 23/06/2014, 01:20