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whitepaper In the evaluation it considers MIMO-OFDM transmission. This paper extends this Wyner-Ziv bound to MIMO-OFDM, by applying results from Bayesian vector estimation and rate-distortion coding theory. This paper investigates the capacity of Compress-and...
[11 Apr 2008]
whitepaper The influence of phase noise (PN) on the performance of a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) based communication system is analyzed. A PN power weighting function is derived which indicates the...
[10 Apr 2008]
whitepaper The combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next-generation wireless communication systems...
[10 Apr 2008]
whitepaper The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next generation wireless communication systems...
[10 Apr 2008]
whitepaper Spatial multiplexing with linear precoding is a simple technique to take advantage of the high spectral efficiency provided by multiple-input multiple-output (MIMO) systems, and it can be simply implemented over frequency selective channels by...
[10 Apr 2008]
whitepaper This paper investigates trade offs between different techniques in broadband OFDM-based MIMO systems for achieving full diversity or maximum spatial multiplexing gain. The basic model of OFDM-based spatial multiplexer is very suitable for high data...
[10 Apr 2008]
whitepaper To gain a better understanding of the influence of these impairments on the performance of multiple antenna OFDM systems, this paper studies a zero-forcing based MIMO OFDM system with imperfections modeled as additive error sources in both...
[10 Apr 2008]
whitepaper Coupled with a robust and efficient OFDM air interface, MIMO technologies lead to a very compelling high-speed data downlink solution for future wireless systems. This paper presents Nortel Networks' MIMO-OFDM concept prototype and measured...
[07 Jan 2008]
whitepaper 802.11 Task Group N (TGn) has an interesting goal. Most IEEE task groups focus on increasing the peak throughput, making data fly as fast as possible during the time it is being transmitted. TGn's goal is to achieve 100 Mbps net throughput, after...
[10 Oct 2007]
whitepaper MIMO OFDM is one of the most promising techniques to achieve high data rate over mobile wireless channels. In this paper, a MIMO OFDM system is developed, which employ interleaver at the transmitter to implement frequency domain diversity.
[17 Sep 2007]
whitepaper Combining MIMO with Orthogonal Frequency Division Multiplexing (OFDM), it is possible to significantly reduce receiver complexity as OFDM greatly simplifies equalization at the receiver. MIMO-OFDM is currently being considered for a number of...
[31 Aug 2007]
whitepaper This paper proposes a combined frequency and time domain channel estimation method for MIMO OFDM systems. Initial channel estimation is performed by first estimating the channel response in frequency domain, exploiting a set of dedicated pilot...
[31 Aug 2007]
whitepaper Combining MIMO with Orthogonal Frequency Division Multiplexing (OFDM), it is possible to significantly reduce receiver complexity as OFDM greatly simplifies equalization at the receiver. MIMO-OFDM is currently being considered for a number of...
[10 Aug 2007]
whitepaper This paper proposes a combined frequency and time domain channel estimation method for MIMO OFDM systems. Initial channel estimation is performed by first estimating the channel response in frequency domain, exploiting a set of dedicated pilot...
[10 Aug 2007]
whitepaper A promising way to achieve this is the combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM). A test system is built in which the OFDM based Wireless LAN standard IEEE 802.11a...
[08 Aug 2007]
whitepaper This paper presents MIMO-OFDM channel estimation for spatially correlated channels using frequency domain estimation techniques. First, the exploitation of spatial correlation on further improving the channel estimates is investigated.
[07 Aug 2007]
whitepaper This paper extends the PAR optimization technique to Multiple-Input Multiple-Output (MIMO) OFDM systems with channel precoding. In MIMO systems with a large OFDM symbol size, it is infeasible to solve the optimization problem by direct methods such...
[07 Aug 2007]
whitepaper MIMO-OFDM systems are gaining prominence in high data rate applications due to their increased spectral efficiency. In MIMO-OFDM systems, I/Q mismatch causes interference between the frequency mirror subcarriers.
[02 Aug 2007]
whitepaper This paper presents a concept for implementing MIMO-OFDM in real time on a hybrid FPGA/DSP software-radio platform. The OFDM parameters are similar to the 802.11a and HiperLAN/2 standards. A new preamble is defined for the channel estimation, to...
[02 Aug 2007]
whitepaper The performance of coherent MIMO-OFDM systems critically depends on the availability of accurate channel estimates. In this paper an extended Kalman filter technique for pilot symbol assisted MIMO-OFDM channel tracking is developed.
[27 Jul 2007]
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