mimo ofdm
RSS mimo ofdmThroughput Enhancement for Wireless Communication Systems Using the Multiple Antenna Technique MIMO
White Paper 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]
MIMO-OFDM Channel Estimation for Correlated Fading Channels
White Paper 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]
Optimal Peak-to-Average Power Ratio Reduction in MIMO-OFDM Systems
White Paper 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]
I/Q Mismatch Cancellation for MIMO-OFDM Systems
White Paper 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]
Real-Time Concepts for MIMO-OFDM
White Paper 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]
Kalman Tracking of Time-Varying Channels in Wireless MIMO-OFDM Systems
White Paper 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]
HSDPA and Beyond
White Paper The other future evolutions like HSUPA or MIMO and OFDM will also be presented. This paper will provide an overview of HSDPA and will focus on the business values that such a highly-efficient access technology will bring to wireless operators... [06 Jul 2007]
Performance Analysis and Design Optimization of LDPC-Coded MIMO OFDM Systems
White Paper 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. [26 Apr 2007]
Interpolation-Based Multi-Mode Precoding for MIMO-OFDM Systems
White Paper Spatial multiplexing with multi-mode precoding provides a means to achieve both high capacity and high reliability in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. [26 Apr 2007]
A Space-Time Receiver for MIMO-OFDM Ad Hoc Networks
White Paper This paper proposes a receiver architecture that can demodulate multiple data streams with different frequency offsets and propagation delays in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) ad hoc networks. [26 Apr 2007]
Channel Capacity of TDD-OFDM-MIMO for Multiple Access Points in a Wireless Single-Frequency-Network
White Paper This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. The Multiple-Input-Multiple-Output (MIMO) technique is the most attractive candidate to... [18 Apr 2007]
On the Exploitation of Multiple Access Points in a Wireless Single-Frequency-Network Using TDD-OFDM-MIMO Techniques
White Paper This paper proposes a new MIMO data transmission scheme, which combines Single-Frequency-Network (SFN) with TDD-OFDM-MIMO applied for wireless LAN networks. The Multiple-Input-Multiple-Output (MIMO) technique is the most attractive candidate to... [18 Apr 2007]
Per-Tone Equalization for MIMO-OFDM Systems
White Paper This paper focuses on Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems, where the MIMO channel order is larger than the length of the Cyclic Prefix (CP). [18 Apr 2007]
On the Influence of Phase Noise Induced ICI in MIMO OFDM Systems
White Paper The influence of transmitter and receiver Phase Noise (PN) on the performance of a Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) based communication system is analyzed. [18 Apr 2007]
Reduced Complexity Blind Layered Space-Time Equalization for MIMO OFDM Systems
White Paper This paper proposes reduced complexity blind Layered Space-Time Equalization (LSTE) for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM). Blind Source Separation (BSS) combined with a Vertical Bell... [18 Apr 2007]
