Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
This paper presents a compact and efficient hard output MIMO detection and its FPGA implementation. Our method is based on a complex-valued decomposition and a highly compact expansion, which needs least number of visited nodes and a half of tree depth than previously published K-best designs. We propose a fully pipelined architecture, combining with resource sharing to realize the detector. Furthermore,...
Next generation wireless communication systems, such as 3GPP LTE-Advanced and ITU IMT-Advanced, are demanded to support 1Giga-bit per second (Gbps) peak data rate. Compared with traditional systems, 1Gbps high throughput systems have some different difficulties in system design and hardware implementation. This paper mainly presents some important design criterions and novel methods on parameter design...
In this paper, we present a prototype FPGA design for an efficient physical layer implementation of a MIMO-OFDM technique. We implement multi-channel MIMO-OFDM systems using single Fast Fourier Transform block that is shared across modulations for the system. Our experimental results show that the proposed implementation saves at least 60 percent of the hardware resources, while achieving the same...
This paper describes the concept, architecture, development and demonstration of a real time, maximum likelihood Alamouti decoder for a wireless 4-transmit 4-receiver multiple input and multiple output (MIMO) Smart Antenna Software Radio Test System (SASRATS) platform. It is implemented on a Xilinx Virtex 2 Pro Field Programmable Gate Array (FPGA).Hardware, firmware, use of the Xilinx Core Generator...
Real-time wireless channel simulators are necessary for radio prototyping. Doppler filter is one of the basic building blocks in correlation-based channel simulators. Enormous computational complexity of channel models for new wireless standards like MIMOs prohibit their software realizations (which have traditionally been the case). In first part of this work, we dimension and compare two alternative...
This paper deals with the development of 1.2 Gbps MIMO wireless LAN system based on IEEE802.11TGac's functional requirements. It reaches 33 meter propagation distance by using 80MHz of bandiwdth on 5GHz band. 4 times 5 antennas configuration contribute 2nd-order diversity gain and maintain both the high throughput and the high performance. The proposed Greenfield format preamble has high preamble...
This paper presents a FPGA implementation of an OFDMA modem for the physical layer of LTE technology, suitable for both uplink and downlink transmission. The designed structure achieves a low area occupation while fulfilling LTE requirements.
Multiple Input Multiple Output (MIMO) system is a key technology for future high speed wireless communication standards like 802.11n, WIGWAM, and WiMax. These standards require support for multiple modulation and coding schemes. Hence, the receiver hardware should be able to accomodate these schemes preferably on a single reconfigurable architecture. Current MIMO detector implementations are constrained...
This paper presents a model-based register transfer level (RTL) design of a 4times2 multiple-inputs multiple-outputs (MIMO)-orthogonal frequency domain multiplexing (OFDM) wireless communication systems transmitter and its field programmable gate array (FPGA) implementation. This system provides a maximum of 600 Mbps with 20 meter of propagation distance using 80 MHz baseband bandwidth with 4times2...
This paper proposes a novel preamble structure and a timing synchronization method for OFDM systems. The preamble structure has both properties of delayed and symmetric correlations which can afford accurate time and frequency synchronization simultaneously. A new timing metric is also proposed according to the preamble structure, which is the production of the modulus of delayed and symmetric correlation...
Multiple-input multiple- output (MIMO) and orthogonal frequency division multiplexing (OFDM) are two key techniques for broadband wireless mobile communications. In order to provide accurate channel state information (CSI) to support MIMO-OFDM transmission in doubly-selective fading channels, we propose the robust channel estimator based on two-dimensional enhanced discrete-time Fourier transform...
Today iterative receivers have proved their efficiency in cancelling interference within the field of wireless communications. However their complexity is often seen as a brake for their use in real systems. In this paper an efficient iterative receiver real-time implementation for a 4 times 4 MIMO system is presented. An architecture of MMSE iterative receiver for MIMO-OFDM systems is proposed to...
In a MIMO communication system, K-best decoding algorithm achieves near optimal performance with reduced complexity. Simulation results show that a reconfigurable MIMO detector can improve system performance over a wide range of operating conditions. In this paper we present a low complexity reconfigurable architecture for implementation of K-best algorithm. Implementation results using FPGA technology...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.