FPGA Prototyping of A High Data Rate LTE Uplink Baseband Receiver

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Title: FPGA Prototyping of A High Data Rate LTE Uplink Baseband Receiver
Author: Wang, Guohui; Yin, Bei; Amiri, Kiarash; Sun, Yang; Wu, Michael; Cavallaro, Joseph R.
Type: Conference Paper
Publisher: IEEE
Citation: G. Wang, B. Yin, K. Amiri, Y. Sun, M. Wu and J. R. Cavallaro,"FPGA Prototyping of A High Data Rate LTE Uplink Baseband Receiver," in 43rd Asilomar Conference on Signals, Systems and Computers, 2009, pp. 248-252.
Abstract: The Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard is becoming the appropriate choice to pave the way for the next generation wireless and cellular standards. While the popular OFDM technique has been adopted and implemented in previous standards and also in the LTE downlink, it suffers from high peak-to-average-power ratio (PAPR). High PAPR requires more sophisticated power amplifiers (PAs) in the handsets and would result in lower efficiency PAs. In order to combat such effects, the LTE uplink choice of transmission is the novel Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme which has lower PAPR due to its inherent signal structure. While reducing the PAPR, the SC-FDMA requires a more complicated detector structure in the base station for multi-antenna and multi-user scenarios. Since the multi-antenna and multi-user scenarios are critical parts of the LTE standard to deliver high performance and data rate, it is important to design novel architectures to ensure high reliability and data rate in the receiver. In this paper, we propose a flexible architecture of a high data rate LTE uplink receiver with multiple receive antennas and implemented a single FPGA prototype of this architecture. The architecture is verified on the WARPLab (a software defined radio platform based on Rice Wireless Open-access Research Platform) and tested in the real over-the-air indoor channel.
Date Published: 2009-11-01

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