multiple input multiple output mimo optical wireless communications

... ii Date: Simulation of a MIMO wireless system – John Fitzpatrick Abstract This project explores the development of a multiple input multiple output (MIMO) simulator using ray tracing ... recovered 2.5 MIMO MIMO exploits multipath, traditionally a pitfall in wireless communications, to enhance rather than degrade the signal MIMO systems consist of multiple transmitters and multiple ... is crucial to the operation of MIMO systems Algorithms and signal processing at both ends of a MIMO wireless link are crucial to encode and Simulation of a MIMO wireless system – John Fitzpatrick...

Ngày tải lên: 20/11/2012, 11:36

... development of MIMO systems MIMO System Model and Capacity Studies Design Criterion for MIMO Systems (Diversity Vs Spatial Multiplexing) Some actual architectures based on these criterion MIMO- OFDM ... Practice: An Overview of MIMO Space-Time Coded Wireless Systems”, Gesbert et al.,IEEE Sel Comm, 2003 “On Limits of Wireless Communications in a Fading Environment”, Foschini and Gans, Wireless Personal ... to capture this  So MIMO promises enormous rates theoretically! Can we exploit this practically? MIMO Design Criterion MIMO Systems can provide two types of gain  Spatial Multiplexing Gain Diversity...

Ngày tải lên: 27/01/2014, 15:20

... MIMO SYSTEMS H D NGUYEN Chapter Introduction 1.1 Motivation Wireless communication paradigm has evolved from single-user single -input singleoutput (SISO) and multiple- input multiple- output (MIMO) ... Identically Distributed INR Interference-to-Noise Ratio MF Matched Filter MIMO Multiple Input Multiple Output MISO Multiple Input Single Output MMSE Minimum-Mean-Square Error xvii H D NGUYEN LIST OF ACRONYMS ... not yet fully characterized even in a single-cell setup We thus study a multicell multiple- input multiple- output (MIMO) broadcast system with RBF applied at each base station and either the minimum-mean-square-error...

Ngày tải lên: 10/09/2015, 09:27

... are developed for multiple- input multiple- output orthogonal frequency division multiplexing (MIMO- OFDM) systems, they are applicable to other multiple- input multiple- output wireless communication ... techniques for multipleinput multiple- output systems As received signals of multiple- input multiple- output systems may contain much more severe interferences compared to single -input singleoutput systems, ... higher than that in current wireless local area network systems Multipleinput multiple- out technology is commonly referred to as MIMO technology in wireless communications As MIMO technology can be...

Ngày tải lên: 14/09/2015, 14:12

... CCU Wireless Access Tech Lab Wireless Access Tech Lab Time Division Multiple Access (TDMA) (5)  TDMA Frame Structure CCU Wireless Access Tech Lab Wireless Access Tech Lab Time Division Multiple ... spreading sequence CCU Wireless Access Tech Lab Wireless Access Tech Lab Code Division Multiple Access (CDMA) (2) CCU Wireless Access Tech Lab Wireless Access Tech Lab Code Division Multiple Access ... Lab Spread Spectrum Multiple Access (7)  Modulation CCU Wireless Access Tech Lab Wireless Access Tech Lab Spread Spectrum Multiple Access (8) CCU Wireless Access Tech Lab Wireless Access Tech...

Ngày tải lên: 11/07/2014, 21:20

... internationalconference on Wireless and Optical Communications Networks (WOCN ’09), pp 388–392, IEEE Press, Piscataway, NJ, USA, 2009 [11] H Elgala, R Mesleh, and H Haas, “Predistortion in optical wireless transmission ... we present three new modulation techniques for diffuse optical wireless communications with IM/DD The first applies asymmetrically clipped optical (ACO) principles to SCFDE which we called ACO-SCFDE ... asymmetrically clipped optical OFDM and DC-biased optical OFDM in AWGN,” vol 12, no 5, pp 343–345 [10] H Elgala, R Mesleh, and H Haas, “A study of LED nonlinearity effects on optical wireless transmissionusing...

Ngày tải lên: 21/06/2014, 08:20

... current studies on multiple- input multiple- output (MIMO) systems assume that the noise at receiving antennas are independent (white noise) In this dissertation, we focus on MIMO systems under colored ... services, multiple transmitting and multiple receiving antennas have been proposed for modern wireless systems, where performance is limited by fading and noise Most of the current studies on multiple- input ... Interference independent and identical distributed Intersymbol Interference Line-Of-Sight MIMO Multi -Input Multi -Output MSE Mean Square Error PAM Pulse Amplitude Modulation QAM Quadrature Amplitude...

Ngày tải lên: 03/10/2015, 11:37

... (Single Input Single Output) communication, over some frequency bands Meanwhile, spatial channel models for a multi-antenna communication system, referred to as the MIMO (Multiple Input Multiple Output) ... MIMO- OFDM WIRELESS COMMUNICATIONS WITH MATLABÒ MIMO- OFDM WIRELESS COMMUNICATIONS WITH MATLABÒ Yong Soo Cho Chung-Ang University, ... does not change MIMO- OFDM Wireless Communications with MATLAB Ò Yong Soo Cho, Jaekwon Kim, Won Young Yang and Chung G Kang Ó 2010 John Wiley & Sons (Asia) Pte Ltd MIMO- OFDM Wireless Communications...

Ngày tải lên: 22/09/2016, 01:43

... further improved by using multiple antennas at each node The use of relays together with using multiple antennas has made it a versatile technique to be used in emerging wireless technologies [15–20] ... Optimal design of non-regenerative MIMO wireless relays IEEE Trans Wirel Commun 6(6), 1398–1407 (2007) [16] B Wang, J Zhang, A Host-Madsen, On the capacity of MIMO relay channels IEEE Trans Inf ... triangularization for MIMO wireless networks IEEE Trans Commun 55(9), 16831688 (2007) [23] SO Gharan, A Bayesteh, AK Khandani, Asymptotic analysis of amplify and forward relaying in a parallel MIMO relay...

Ngày tải lên: 21/06/2014, 23:20

... 1.5 Principle of Multiple Input Multiple Output Radar MIMO radar transmits multiple independent signals from multiple transmit antennas and receives the return signals using multiple receive ... still high By exploring multiple snapshots signals and coherent processing, the sidelobes can be mitigated [12] Multiple Input Multiple Output (MIMO) radar transmits multiple coded signals and ... 175 176 177 178 178 178 179 List of Acronyms ISAR Inverse Synthetic Aperture Radar MIMO Multiple Input Multiple Output RCS Radar Cross Section ZCZ Zero Correlation Zone DOA Direction Of Arrival...

Ngày tải lên: 09/09/2015, 11:23

... cover multiple access in GSM/GPRS and in UMTS, as well as latest trends in the industry towards the merging of wireless communications and IPbased data communications, including their impact on multiple ... 2.5.3 Wireless Local Area Network (WLAN) Standards 2.6 Summary 38 40 40 41 42 44 44 44 46 48 Multiple Access in Cellular Communication Systems 3.1 Multiple Access and the OSI Layers 3.2 Basic Multiple ... MULTIPLE ACCESS PROTOCOLS FOR MOBILE COMMUNICATIONS Multiple Access Protocols for Mobile Communications GPRS, UMTS and Beyond Alex Brand Swisscom...

Ngày tải lên: 02/03/2013, 16:59

... real-time tests Keywords: baseband; MAC; MIMO; processor Introduction Current multiple- input multiple- output (MIMO) wireless systems perform the combining and processing of the complex antenna ... for MIMO based IEEE 802.11 wireless local area networks, in Proc IEEE Wireless Commun Networking Conference, Hong Kong, China , pp 2131–2136, 2007 11 L Yuxia, VWS Wong, Cross-layer design of MIMO- Enabled ... References H Boelcskei, D Gesbert, CB Papadias, A-J van der Veen, Space-Time Wireless Systems: From Array Processing to MIMO Communications (Cambridge University Press, Cambridge, 2006) IEEE Standard...

Ngày tải lên: 18/06/2014, 22:20

... Channel decoder Figure 3: Task flow of soft -output MIMO detection Frequency Division Multiple Access (OFDMA) as the multiple access scheme in downlink MIMO technologies are also mandatory in LTE ... on Wireless Communications and Networking H Channel preprocessing MMSE: W = (HH H + σ I)−1 HH MFCSO: QR decomposition H1 , H2 σ exploiting the degrees of freedom in MIMO channels Since the multiplexing ... is a MIMO technique aimed at maximizing the data throughput by exploiting the degrees of freedom in MIMO channels Since the multiplexing gain is only available for high SNR region, spatial multiplexing...

Ngày tải lên: 21/06/2014, 17:20

... Mieghem, “Interference in wireless multihop ad-hoc networks and its effect on network capacity,” Wireless Networks, vol 10, no 4, pp 389–399, 2004 [2] IEEE 802.11, Wireless LAN Medium Access ... Garcia-Luna-Aceves, “A protocol for topology-dependent transmission scheduling inwireless networks,” in Proceedings of IEEE Wireless Communications and Networking Conference (WCNC ’99), vol 3, pp 1333–1337, ... and A J Goldsmith, “New media access protocols for wireless ad hoc networks based on cross-layer principles,” IEEE Transactions on Wireless Communications, vol 5, no 8, pp 2228–2241, 2006 [14]...

Ngày tải lên: 22/06/2014, 19:20

... or multiple- input multiple- output (MIMO) channels, represent a very general description for a wide range of applications They incorporate SISO (Single -Input Single -Output) , MISO (Multiple- Input ... MGF MIMO MISO ML MLD MMSE MRC MSB MUD MUI Multiple Access Interference Maximum A Posteriori Multi-Carrier Matched Filter Moment-Generating Function Multiple Input Multiple Output Multiple Input ... Wireless Communications over MIMO Channels Wireless Communications over MIMO Channels Applications to CDMA and Multiple Antenna Systems Volker Kuhn ¨ Universit¨...

Ngày tải lên: 27/06/2014, 08:20

... cover multiple access in GSM/GPRS and in UMTS, as well as latest trends in the industry towards the merging of wireless communications and IPbased data communications, including their impact on multiple ... 2.5.3 Wireless Local Area Network (WLAN) Standards 2.6 Summary 38 40 40 41 42 44 44 44 46 48 Multiple Access in Cellular Communication Systems 3.1 Multiple Access and the OSI Layers 3.2 Basic Multiple ... MULTIPLE ACCESS PROTOCOLS FOR MOBILE COMMUNICATIONS Multiple Access Protocols for Mobile Communications GPRS, UMTS and Beyond Alex Brand Swisscom...

Ngày tải lên: 27/06/2014, 15:20

... or multiple- input multiple- output (MIMO) channels, represent a very general description for a wide range of applications They incorporate SISO (Single -Input Single -Output) , MISO (Multiple- Input ... MGF MIMO MISO ML MLD MMSE MRC MSB MUD MUI Multiple Access Interference Maximum A Posteriori Multi-Carrier Matched Filter Moment-Generating Function Multiple Input Multiple Output Multiple Input ... Wireless Communications over MIMO Channels Wireless Communications over MIMO Channels Applications to CDMA and Multiple Antenna Systems Volker Kuhn ¨ Universit¨...

Ngày tải lên: 14/08/2014, 12:20

... parts 1.2.4 Systems with Multiple Inputs and Outputs So far, this section has only described systems with a single input and a single output Now, the scenario is extended to MIMO systems that have ... systems are treated in Chapters to According to Figure 1.1, the MIMO system consists of NI inputs and NO outputs Based on (1.11), the output of a frequency-selective SISO channel can be described ... for MIMO systems As a consequence, NI signals xµ [k], ≤ µ ≤ NI , form the input of our system at each time instant k and we obtain NO output signals yν [k], ≤ ν ≤ NO Each pair (µ, ν) of inputs...

Ngày tải lên: 14/08/2014, 12:20

... space division multiple access (SDMA), or space time coding The MIMO system comprises point-to-point MIMO communications between a single transmitter receiver pair each equipped with multiple antennas ... THEORY The assumption of a Gaussian input leads to an upper bound of the capacity for discrete input alphabets The only difference compared to Single -Input Single -Output (SISO) systems is that we ... of channel knowledge at the transmitters No Cooperation between MIMO Inputs First, we assume that the different inputs of the MIMO system not or cannot cooperate with each other This might be...

Ngày tải lên: 14/08/2014, 12:20