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Rate Efficient Wireless Image Transmission Using MIMO-OFDM
White Papers This paper proposes a rate efficient JPEG 2000 image transmission system over hybrid wireless networks using MIMO-OFDM. In the proposed system, MIMO-OFDM is used to increase the channel capacity and mitigate the inter-symbol interference, variable...
[March 30, 2005, 3:00]
Magic Squares Transmission Scheme For MIMO OFDM Systems Under Fast Fading Channel
White Papers This paper presents high data rate transmission scheme for Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems under fast fading channel in wireless communication.
[October 8, 2008, 1:21]
Point-to-Point Transmission Over MIMO Channels With Intersymbol Interference: Comparison Of Single- And Multicarrier Modulation
White Papers In MIMO orthogonal frequency division multiplexing, temporal equalization is performed by applying OFDM, which decomposes the MIMO ISI channel into a set of independent flat fading MIMO channels. Conversely, in MIMO decision-feedback equalization...
[March 30, 2005, 3:00]
On The Exploitation Of Multiple Access Points In A Wireless Single-Frequency-Network Using TDD-OFDM-MIMO Techniques
White Papers This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. This paper advocates using SFN for Multiple Access Points (MAP) MIMO data transmission.
[April 18, 2007, 1:00]
Channel Capacity Of TDD-OFDM-MIMO For Multiple Access Points In A Wireless Single-Frequency-Network
White Papers This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. This proposal advocates using SFN for Multiple Access Points (MAP) MIMO data transmission.
[April 18, 2007, 1:00]
New Technologies In 802.11n review
Reviews A revolutionary technique that reverses 100 years of thinking about how radio signals are transmitted, MIMO leverages environmental structures and takes advantage of multipath signal reflections to actually improve radio transmission performance.
[June 24, 2008, 9:51]
Catch The New Wave In Wireless Networking: 802.11n review
Reviews The smart antennas on a MIMO router can hand off reception and transmission dynamically to each other, adjusting for the clearest data path on the fly. However, products based on competing versions of 802.11n's powerful smart-antenna technology...
[May 3, 2005, 12:05]
Why 802.11n Is A Hard Act To Swallow review
Reviews Called MIMO (Multiple Input, Multiple Output), this works by using the slight differences in distance between the physical paths between pairs of transmitting and receiving antennas to differentiate between the signals.
[November 21, 2006, 7:46]
Performance Of Joint Detection Techniques For Coded MIMO-OFDM And MIMO-MC-CDM
White Papers This paper considers a coded transmission over a time-invariant MIMO channel where channel state information is present at the receiver but not at the transmitter. In the case of MIMO-OFDM crosstalk only occurs because of the use of multiple...
[November 2, 2004, 2:00]
Comparison Of Iterative Detection Schemes For MIMO Systems With Spreading Based On OFDM
White Papers This paper considers a coded transmission over a time-invariant MIMO channel, where channel state information is present at the receiver but not at the transmitter. As basic modulation technique OFDM is applied.
[August 10, 2008, 1:16]
Effect Of Spreading In An Outdoor MIMO-OFDM System
White Papers This paper considers transmission over an outdoor broadband MIMO channel where channel state information is present at the receiver but not at the transmitter. Multicarrier (MC) transmission schemes are considered to be promising candidates for the...
[August 9, 2008, 1:16]
Comparison Of Vector Detection Algorithms For MIMO-OFDM
White Papers The aim of this paper is to compare detection algorithms for MIMO-OFDM transmissions by simulation. Moreover, iterative equalization techniques based on soft interference cancellation connected with decoding via the well-known turbo principle can...
[April 11, 2007, 1:01]
Performance Analysis And Design Optimization Of LDPC-Coded MIMO OFDM Systems
White Papers This paper considers the performance analysis and design optimization of Low-Density Parity Check (LDPC) coded Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) systems for high data rate wireless transmission.
[April 26, 2007, 1:00]
Spatial Multiplexing And Diversity Gain In OFDM-Based MIMO Systems
White Papers This paper investigates trade offs between different techniques in broadband OFDM-based MIMO systems for achieving full diversity or maximum spatial multiplexing gain. Multiple transmit and receive antennas can be used with orthogonal frequency...
[October 21, 2004, 5:45]
On The Capacity Of Noncoherent Wideband MIMO-OFDM Systems
White Papers In this paper the capacity behavior of full-band MIMO-OFDM systems in the absence of channel state information both at the transmitter and the receiver is studied. Based on capacity lower and upper bounds, the transmission rate penalty due to...
[August 9, 2008, 1:16]
Breaking The Barriers Of Shannon's Capacity: An Overview Of MIMO Wireless Systems
White Papers This paper overviews the fundamentals of MIMO wireless systems and explains the reasons of their success, triggered mainly by the attraction of radio transmission capacities far greater than those available today.
[March 28, 2005, 3:00]
Per-Antenna-Coded Schemes For MIMO OFDM
White Papers Two Per-Antenna-Coding (PAC) receiver schemes for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) are described and compared in this paper. In MIMO, the data to transmit are multiplexed onto different antennas.
[November 2, 2004, 2:00]
Broadband MIMO-OFDM Wireless Communications
White Papers OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and/or to enhance the system capacity on time-variant and frequency-selective channels, resulting in a multiple-input multiple-output (MIMO...
[November 2, 2004, 2:00]
Multimode Precoding For MIMO Wireless Systems
White Papers Multiple-Input Multiple-Output (MIMO) wireless systems obtain large diversity and capacity gains by employing multielement antenna arrays at both the transmitter and receiver. The theoretical performance benefits of MIMO systems, however, are...
[August 10, 2007, 11:07]
SDM-COFDM Technologies For Broadband Wireless Access Over 100 Mbit/s
White Papers This paper describes a simple SDM-COFDM (space division multiplexed, coded orthogonal frequency division multiplexing) scheme for MIMO (multiple input multiple output)-based broadband wireless access.
[October 26, 2004, 3:00]
