All mimoofdm receivers must perform time synchronization, frequency offset estimation, and correction and parameter estimation. Instead of a sending and receiving antenna, in the mimo technology, up to four transmitter antennas and four receiver antennas to be used. Wimax was a superior technology in terms of speed roughly 25mbits for a few years 20052009, and it pioneered some new technologies such as mimo. The maxwave rooftop antenna incorporates four broadband antenna elements operating simultaneously across all frequencies, from 698mhz 6000 mhz, which includes 3g4g cellular, lte, wifi and.
This paper presents a joint channel estimation and data detection technique for multiple input multiple output mimo orthogonal frequency division multiplexing ofdm system. Joint channel estimation and data detection for stbc mimo. Case study technological university of delftmimo features in wimax and lte. Advanced topics in digital wireless communications. Combined with orthogonal frequency division multiplexing ofdm the mimo ofdm system is considered an attractive candidate for high data rate wideband wireless communications over frequency selective channels. Introduction to wireless mimo theory and applications.
High speed downlink packet access, lte long term evolution and wimax worldwide interoperability for microwave access. Ofdm ofdma 4g mimo u ghput i i wimax lte 3g ieee 802 c ity thro cdma w ff 2g umtshsxpa e less capa amps gsm wir first cell phones. Aside from specifying the support of various channel bandwidths and adaptive modulation and coding, it also specifies the support for mimo antennas to provide good nonlineof. The volume also offers an indepth treatment of cuttingedge cooperative communications.
Get your kindle here, or download a free kindle reading app. Mimobased wifi routers use the same network protocols that conventional singleantenna, nonmimo routers do. Wireless tutorial wifi, 4g, 3g, white spaces and beyond. Mimoofdm for lte, wifi and wimax ebook by yosef akhtman. Mimo has become an essential element of wireless communication standards including ieee 802. Mimoofdm for lte, wifi and wimax mimoofdm for lte, wifi and wimax. For selection from mimoofdm for lte, wifi and wimax. Academia and industry have investigated the mimo technology for the last twenty years and recently it has been deployed in wireless standards, for instance, wifi ieee 802. Coherent versus noncoherent and cooperative turbotransceivers 9780470711750. From what i can read in the press, only nortel has so far picked up on this and has stated that it will implement collaborative mimo in the uplink direction for both wimax here and here and lte. Coherent versus noncoherent and cooperative turbotransceivers the mimo capacity theoretically increases linearly with the number of transmit. This is generally carried out using a preamble consisting of one or more training sequences. Coherent versus noncoherent and cooperative turbo transceivers book. Mimoofdmforltewifiandwimax the rationale and codebus.
It is highly scalable and 2 units work together seamlessly to provide 8x8 performance as modems are upgraded to support an 8x8 mimo. Coherent versus noncoherent and cooperative turbotransceivers. Coherent versus noncoherent and cooperative turbotransceivers the mimo capacity theoretically increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to. The conception of parallel transmission of data over dispersive channels dates back to. Coherent versus noncoherent and cooperative turbo transceivers weyie. Mimo features in wimax and lte linkedin slideshare. Coherent versus noncoherent and cooperative turbotransceivers by.
Initial estimate of the channel is obtained using semiblind channel estimation sbce. Due to its large file size, this book may take longer to download. Coherent versus noncoherent and cooperative turbo transceivers wiley ieee book 27 kindle edition by hanzo, lajos, akhtman, yosef, wang, li, jiang, ming. A feature overview 5 h integrated security for voice and data transmission ofdm technology has been incorporated into lte because using advanced encryption standard aes it enables high data bandwidths to be transmitted efficiently while still providing a high degree of resilience to reflections and interference. High throughput for 2 in 1 mimo antennas high performance compact size available for wifi ieee802. The mimo capacity theoretically increases linearly with the number of transmit antennas. Read mimoofdm for lte, wifi and wimax coherent versus noncoherent and cooperative turbo transceivers by yosef akhtman available from rakuten. Principles of modern cdma mimo ofdm wireless communications. Section ii describes the basic mimoofdm system model. Coherent versus noncoherent and cooperative turbotransceivers provides an uptodate portrayal of wireless transmission based on ofdm techniques augmented with spacetime block codes stbcs and spatialdivision multiple access sdma. Wang university of southampton we dedicate this monographto the numerous contributors of this. Multiple in, multiple out pronounced mymo and abbreviated as mimo is a method for the coordinated use of several radio antennas in wireless network communications.
Being a frequencydomain approach to communications, ofdm has important advantages in dealing with the frequencyselective nature of high data rate wireless communication channels. Ofdm systems for wireless communications download ebook. Coherent versus noncoherent and cooperative turbotransceivers provides an uptod. Turbotransceivers provides an uptodate portrayal of wireless transmission based on ofdm techniques augmented with spacetime block codes stbcs and spatialdivision multiple access sdma. In radio, multipleinput and multipleoutput, or mimo, is a method for multiplying the capacity of a radio link using multiple transmission and receiving antennas to exploit multipath propagation. Mimoofdm for lte, wifi and wimax eprints soton university of. Lte wifi wimax mimo train antenna m2m connectivity. Mimoofdm for lte, wifi and wimax coherent versus noncoherent and cooperative turbotransceivers by l. The volume also offers an indepth treatment of cuttingedge cooperative. Wimax is the technology brand name for the implementation of the standard ieee 802. Chapter 2 ofdm standards during the past decades, wireless communication has benefitted from substantial advances and it is considered as the key enabling technique of innovative future consumer products.
Using its patented 4x4 mimo technology, maxwave enables highbandwidth streaming communications for onboard systems. Use features like bookmarks, note taking and highlighting while reading mimoofdm for lte, wifi and wimax. Multiple input, multiple output orthogonal frequencydivision multiplexing mimoofdm is the dominant air interface for 4g and 5g broadband wireless communications. Mimo multiplexing spatial multiplexing and diversity space time coding having ofdm modulation scheme are the main areas of focus in our thesis study. Difference between wimax and wifi compare the difference. Coherent versus noncoherent and cooperative turbotransceivers provides an uptodate portrayal of wireless transmission based on ofdm techniques augmented with spacetime. It combines multiple input, multiple output technology, which multiplies capacity by transmitting different signals over multiple antennas, and orthogonal frequencydivision multiplexing ofdm, which divides a radio channel into. With limited spectrum resources, multiple input multiple output mimo techniques are paramount for achieving the minimum target cell spectral efficiency, peak spectral efficiency, and cell edge user spectral efficiency defined by the itu 4. In this paper, the performance of mimoofdm system employing quadrature. It can be used in providing high speed internet services with download speed ranging from.
Mimo is used in lte as part of an efficient way to deliver that data in multiple streams to the same device, allowing more data to pass simultaneously to th. Coherent versus noncoherent and cooperative turbotransceivers mimoofdm for lte, wifi and wimax. This in effect creates a mimo channel, just that the two or more antennas do not belong to one terminal but to several. In lte wireless networks, mimo antenna technology is used. Coherent versus noncoherent and cooperative turbotransceivers provides an. It provides robustness to frequency selective fading, high spectral e ciency and low computational complexit.
These techniques form the basis of understanding the world of 3g4g wireless communication systems. Introduction to orthogonal frequency division multiplexing ofdm cyclic prefix cp and circul duration. Mimoofdmforltewifiandwimax the rationale and structure of this volume is centred around the following storyline. Orthogonal frequency division multiplexing ofdm systems are widely used in the standards for digital audiovideo broadcasting, wifi and wimax. Collaborative mimo for wimax and lte wirelessmoves.
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