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— The QR decomposition is an important, but often underestimated prerequisite for pseudo-or non-linear detection methods such as successive interference cancellation or sphere decoding for multiple-input multiple-output (MIMO) systems. The ability of concurrent iterative sorting during the QR decomposition introduces a moderate overall latency, but provides(More)
The paper describes an algorithm and a corresponding VLSI architecture for the implementation of linear MMSE Idle Dtat Idle detection in packet-based MIMO-OFDM communication systems. The advantages of the presented receiver architecture are low latency, high-throughput, and efficient resource utilization, MIMO detectioni since the hardware required for the(More)
The development of state-of-the-art wireless communication transceivers in semiconductor technology is a challenging process due to complexity and stringent requirements of modern communication standards such as IEEE 802.11n. This tutorial paper describes a complete design, verification, and performance characterization methodology that is tailored to the(More)
Introduced in 1999, differential power-analysis (DPA) attacks pose a serious threat for cryptographic devices. Several countermeasures have been proposed during the last years. However, none of them leads to implementations that are provably resistant against DPA. A promising class of DPA countermeasures is masking. In this article we discuss(More)
Future wireless LANs will increase the peak data rate by employing multiple antennas at both transmitter and receiver. Well designed synchronization algorithms are a prerequisite for meeting stringent QoS requirements. In particular OFDM modulation, which constitutes the basics for WLAN, is very sensitive to timing synchronization errors which incur(More)
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 216 Mbit/s over a 20MHz channel in the 2.4 GHz ISM band, is benchmarked under(More)