Blind channel estimation for MIMO OFDM communication systems
Blind channel estimation for MIMO OFDM communication systems
... 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...
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...
MIMO OFDM COMMUNICATION SYSTEMS
... plays a significant role for MIMOOFDM systems For this reason, it is the first part of my dissertation to work on channel estimation of MIMO- OFDM systems The maturing of MIMO- OFDM technology will lead ... referred to as OFDM Since we aim at performance enhancement for wireless communication systems, we use the term OFDM throughout this thesis Furthermore, we only use the term...
Báo cáo sinh học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" ppt
... an open-loop MIMO OFDM-CDMA scheme using space-timefrequency spreading (STFS), in the presence of frequency-selective Rayleigh-fading channel The BER and BLER performance of the OFDM-CDMA system ... scheduling In addition, it offers better diversity/multiplexing trade-off The performance of MIMO OFDM–CDMA scheme using STFdomain spreading is investigated with zero-forcing...
Báo cáo toán học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" pptx
... N c , the OFDM-CDMA 60 Proposed OFDM-CDMA 2D OFDM-CDMA Number of Users 50 40 30 20 10 0 10 12 14 16 SNR dB Figure 10 System throughput comparison for OFDM-CDMA system with 4Tx, 4Rx of the proposed ... scheduling In addition, it offers better diversity/multiplexing trade-off The performance of MIMO OFDM-CDMA scheme using STF-domain spreading is investigated with zero-fo...
Báo cáo hóa học: " Adaptive low-rank channel estimation for multiband OFDM ultra-wideband communications" pptx
... 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...
báo cáo hóa học: " Adaptive low-rank channel estimation for multiband OFDM ultra-wideband communications" docx
... 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...
Báo cáo hóa học: "Research Article A Practical, Hardware Friendly MMSE Detector for MIMO-OFDM-Based Systems" pptx
... on an FPGA has a single-clock latency Based on the complexity assessment in this section and the fact that we target an FPGA implementation where a number of dedicated multipliers are available, ... enhances numerical stability; and (d) an aggressive time-shared VLSI architecture The above techniques are quite general and are readily applicable to any MMSE- based MIMO detector implemen...
Báo cáo hóa học: " Blind Channel Estimation for Space-Time Coded WCDMA Youngchul Sung" potx
... 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 ......
Báo cáo hóa học: " Maximum Likelihood Turbo Iterative Channel Estimation for Space-Time Coded Systems and Its Application to Radio Transmission in Subway Tunnels" potx
... 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...
A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems
... 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...
Semi-blind signal detection for mimo and mimo-ofdm systems
... to algorithms for standard MIMO- OFDM systems and it is robust against channel length overestimation The number of words: 460 Semi-Blind Signal Detection for MIMO and MIMO- OFDM Systems by Ma Shaodan ... the problem of signal detection and proposes three semi-blind algorithms for MIMO, MIMO- OFDM with short cyclic prefix (CP), and MIMOOFDM without CP, respe...
Báo cáo sinh học: " Research Article Time-Frequency Based Channel Estimation for High-Mobility OFDM Systems—Part II: Cooperative Relaying Case" pptx
... timevarying CO -OFDM channels (S → R), (R → D) as well as the cascaded (S → R → D) channels We approach the channel estimation problem from a time-frequency point of view and employ the channel estimation ... almost the same estimation performance for −40 and 40 dB and obtain better results for GSR /GRD = dB as in the individual channel estimation case We show the BER per...
Báo cáo hóa học: " Research Article Degenerated-Inverse-Matrix-Based Channel Estimation for OFDM Systems" pdf
... pilot-aided channel estimation methods for OFDM systems,” IEEE Transactions on Signal Processing, vol 49, no 12, pp 3065–3073, 2001 [5] G Auer, A Dammann, and S Sand, Channel estimation for OFDM systems ... 1) Figure 5: NMSE performance with σ/T = 0.123 and fd T =0.0075 Figure 7: BER performance with 64-QAM -OFDM We can see that the DIME achieved a good performance for 16-QA...
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