Iterative receiver design for MIMO OFDM systems via sequential monte carlo (SMC) techniques
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 systems, this chapter briefly introduces the background ... for OFDM systems 21 2.2.2 Peak-to-Average (PAR) of OFDM systems 30 2.2.3 Channel estimation for OFDM systems 33 2.2.4 Synchronization of OFDM systems 38 2.2.5 Advantages...
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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, respectively A three-step semi-blind Rake-based ... thesis entitled Semi-Blind Signal Detection for MIMO and MIMO- OFDM Systems Submitted by Ma Shaodan for the degree of Doctor of Philosophy at The University of Hong Kong in May 2006 MIMO (Multiple...
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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 (ZF) receiver It is ... section, joint space-time-frequency spreading is proposed for the downlink of an openloop multi-user system employing single-user MIMO (SU -MIMO) system based on OFDMCDMA system A MIMO OFDM channel...
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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-forcing (ZF) receiver It ... doi:10.1186/1687-6180-2011-139 Cite this article as: Dahman and Shayan: Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems EURASIP Journal on Advances in Signal Processing...
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Báo cáo hóa học: " Precoding and Transmitter-Side processing techniques for multiuser MIMO OFDM systems with special emphasis on the PAPR problem" pdf
... Wunder et al.: Precoding and Transmitter-Side processing techniques for multiuser MIMO OFDM systems with special emphasis on the PAPR problem EURASIP Journal on Advances in Signal Processing 2011 ... combined with basis selection algorithm for PAPR reduction Similarly, in the multiuser MIMO OFDM uplink with DFT pre-coding, the joint problem of maximum throughput and PAPR reduction is tackled in the ... fundamental bounds on the potential gains due to coding for the PAPR problem The analysis of an alternative metric instead of PAPR is the topic of the paper On the EVM Computation of Arbitrary...
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Báo cáo hóa học: " Particle swarm optimization for pilot tones design in MIMO-OFDM systems" pot
... subcarrier is increased Because increasing number of subcarrier also increase the number of pilot tones in MIMO-OFDM systems Conclusion In this article, we have proposed particle swarm optimization ... Cite this article as: Seyman and Taşpinar: Particle swarm optimization for pilot tones design in MIMO-OFDM systems EURASIP Journal on Advances in Signal Processing 2011 2011:10 Submit your manuscript ... of particle swarm optimization that has been used for the optimization of location and (or) power of pilot tones are given as follows: swarm size = 20 for 128 subcarriers and swarm size = 10 for...
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Báo cáo hóa học: " Research Article Automatic IP Generation of FFT/IFFT Processors with Word-Length Optimization for MIMO-OFDM Systems" doc
... 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 processors can be shared ... number of ip- flops is related with the pipeline registers and short delay buffers, while the number of slices reflects the logic complexity including distributed RAMs for long delay buffers and ROMs for...
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Báo cáo hóa học: "Research Article Advanced Receiver Design for Quadrature OFDMA Systems" doc
... SNR (dB) Q -OFDMA P = 64 Q -OFDMA P = 16 OFDMA1 OFDMA2 OFDMA3 Figure 5: BER of uncoded systems with BPSK modulation under CM2 channel model, where N = 256 the system performance and Q -OFDMA is inferior ... 16 SNR (dB) Q -OFDMA, ZF, no iteration Q -OFDMA, MMSE, no iteration Q -OFDMA, MMSE, iterations Q -OFDMA, MMSE, iterations Q -OFDMA, FD-DFE Figure 6: BER performance comparison between Q -OFDMA systems ... = 1, the QOFDMA system becomes the conventional OFDMA system, which outperforms the Q -OFDMA system (1 < P < N) only in low SNR range This problem can be solved by utilizing advanced receivers,...
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Báo cáo hóa học: " Blind Decoding of Multiple Description Codes over OFDM Systems via Sequential Monte Carlo" pot
... in Section SYSTEM DESCRIPTION We consider transmitting a continuous source through a diversity OFDM system The diversity of an OFDM system is made up of two N-subcarrier OFDM systems, signalling ... will focus on the operation on the first description to illustrate the iterative procedure Multiple Description Codes over OFDM Y1 145 {λ1 [k]} Blind OFDM {Λ1 [k]} + detector − {λ21 [k]} {λ12 ... j =1 (20) Multiple Description Codes over OFDM 147 Diversity OFDM system bm S( j) MDSQ encoder & binary mapping 1,1 1 cm Channel xn encoder a1 n 1,2 1 Diff Zk Discrete-time Yk encoder OFDM mod...
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Iterative receiver design for broadband wireless communication systems via expectation maximization (EM) based algorithms
... ITERATIVE RECEIVER DESIGN FOR BROADBAND WIRELESS COMMUNICATION SYSTEMS VIA EXPECTATION MAXIMIZATION (EM) BASED ALGORITHMS THE-HANH PHAM (B Eng., Hanoi ... recommendations for future works Chapter Overview of Expectation Maximization (EM), Expectation Conditional Maximization (ECM) and Space-Alternating Generalized EM (SAGE) Algorithms 2.1 Expectation Maximization ... Overview of Expectation Maximization (EM), Expectation Conditional Maximization (ECM) and Space-Alternating Generalized EM (SAGE) Algorithms 2.1 Expectation Maximization Algorithm...
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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 snapshots 96 5.6 BERs for MIMO OFDM ... Channel Estimation for MIMO OFDM Systems 72 5.1 Introduction 72 5.2 System Model 74 5.3 Blind Channel Estimation for SISO OFDM Systems...
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Transmit and receive techniques for MIMO OFDM systems
... 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 optimal training signal design and low-complexity ... concerned in general with the transmit and receive techniques for multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems in wideband frequency selective fading...
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Decoupled maximum likelihood carrier frequency offset estimator for MIMO OFDM systems
... 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 systems, MIMO- OFDM systems ... introduced and compared Performance of the proposed DEML (Decoupled Maximum Likelihood) blind carrier offset estimator for SISO -OFDM and MIMO- OFDM systems is analyzed in Chapter and Chapter 5, respectively...
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Iterative receiver design for MIMO OFDM systems via sequential monte carlo (SMC) techniques
... …………………………………………………… 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 SUBMITTED FOR THE DEGREE OF MASTER ... 84 Iterative Receiver Design for MIMO- OFDM Systems via SMC Techniques with Pilot Aided Channel Estimation (PACE) ………… 86 5.1 Background …………………………………………………… 86 5.2 System Model of Coded MIMO- OFDM...
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