FPGA Implementation of an LTE Based OFDM Transceiver for 2x1 MIMO
نویسندگان
چکیده
In this paper, we present a real-time implementation of 2×1 MIMO system using the Alamouti scheme. The real-time chain is based on the LTE parameters. The testbed is implemented using FieldProgrammable Gate Array (FPGAs) through Xilinx System Generator for DSP. Time-domain synchronization is achieved through a joint maximum likelihood (ML) symbol-time and carrier frequency offset (CFO) estimator through the redundant information contained in the cyclic prefix (CP). Channel estimation uses a pilot scheme similar to the one prosed for LTE. Results show that a complete Alamouti scheme can be efficiently implemented using an FPGA. Key-Words: OFDM; FPGA; Software Defined Radio (SDR), CFO, LTE
منابع مشابه
AN OFDM Platform for Wireless Systems Testing: Alamouti 2x1 MIMO example
In this paper, we present a real-time implementation of an OFDM hardware platform. The platform is based on HW blocks that can be put together to configure a wireless system based on OFDM modulation. The platform can be easily upgraded to test pre-coding cooperation algorithms. We evaluate the platform to implement a diversity Alamouti 2×1 MIMO scheme wireless system. The testbed is implemented...
متن کاملDesign Fpga Implementation of 4×4 Mimo Ofdm Transceiver Using System Generator
Orthogonal Frequency Division Multiplexing (OFDM) is the most widely used modulation technique for wireless communication network. In this paper, 4 x 4 spatially multiplexed MIMO OFDM transceiver is designed using 1/2 encoder and 64 bit FFT. The implementation has been carried out in hardware using Field Programmable Gate Array (FPGA). Both the transmitter and the receiver are implemented on a ...
متن کاملHardware Implementation of an OFDM Transceiver for 802.11n systems
The best approach for real time application to achieve high throughput and network capacity for fourth generation wireless local area networks is to combine MIMO wireless technology with OFDM. This paper focuses on high level Matlab Simulink 4 x 4 spatially multiplexed (SM) MIMO OFDM transceiver encoded at 1⁄2 rate using 64 size FFT which is designed and implemented on Spartan Virtex 6 FPGA boa...
متن کاملSystem-level characterization of a real-time 4×4 MIMO-OFDM transceiver on FPGA
The performance of an FPGA-based MIMO-OFDM testbed is investigated through measurements. The setup includes two real-time terminals, supporting up to 4 spatial streams, and a wideband multipath channel emulator. The performance of the system, transmitting at data rates up to 216Mbit/s over a 20MHz channel in the 2.4GHz ISM band, is benchmarked under different channel scenarios. The impact of di...
متن کاملHardware Development of Baseband Transceiver and FPGA-Based Testbed in 8×8 and 2×2 MIMO-OFDM Systems
Multiple-input multiple-output orthogonal frequency multiplexing (MIMO-OFDM) is powerful in enhancing communication capacity or reliance. The IEEE802.11n standard defines use of four spatial streams in spatial division multiplexing (SDM). The task group of IEEE802.11ac will extend it to eight spatial streams. We present an 8×8 MIMOOFDM baseband transceiver compatible with the IEEE802.11ac speci...
متن کامل