Copyrights to these papers may be held by the publishers. The download files are preprints. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Christian Berger, Volodymyr Arbatov, Yevgen Voronenko, Franz Franchetti and Markus Püschel (Proc. International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 1693-1696 , 2011)
Real-Time Software Implementation of an IEEE 802.11a Baseband Receiver on Intel Multicore
Preprint (148 KB)
Published paper (link to publisher)
We present a software-only implementation of an IEEE~802.11a (WiFi) receiver optimized for Intel multicore platforms. The receiver is about 50 times faster than a straightforward C implementation, i.e., an implementation that has the same functionality, but leaves optimization completely to the compiler. Our hand-optimized implementation achieves real-time for all data rates up to the maximum of 54 Mbit/s on a Core i7, clocked at 3.3 GHz, and for up to 12 Mbit/s on an Atom, clocked at 1.6 GHz, using two cores in both cases. To achieve this performance we use up to two threads, up to 16-way vectorization using Intel's SSE, and various other optimizations.Keywords: Multithreading, SIMD vectorization, Beyond transforms, Software defined radio (SDR)