Myllylä, MarkusJuntti, MarkkuCavallaro, Joseph R.2012-06-112012-06-112009-04-01M. Myllylä, M. Juntti and J. R. Cavallaro, "ARCHITECTURE DESIGN AND IMPLEMENTATION OF THE INCREASING RADIUS - LIST SPHERE DETECTOR ALGORITHM," 2009.http://scholar.google.com/scholar?cluster=10671995471336416937&hl=en&as_sdt=0,44https://hdl.handle.net/1911/64239A list sphere detector (LSD) is an enhancement of a sphere detector (SD) that can be used to approximate the optimal MAP detector. In this paper, we introduce a novel architecture for the increasing radius (IR)-LSD algorithm, which is based on the Dijkstra’s algorithm. The parallelism possibilities are introduced in the presented architecture, which is also scalable for different multiple-input multiple-output (MIMO) systems. The novel architecture is implemented on a Virtex-IV field programmable gate array (FPGA) chip using high-level ANSI C++ language based Catapult C Synthesis tool from Mentor Graphics. The used word lengths, the latency of the design, and the required resources are presented and analyzed for 4 x 4 MIMO system with 16- quadrature amplitude modulation (QAM). The detector implementation achieves a maximum throughput of 12.1Mbps at high signal-to-noise ratio (SNR).engSphereList sphere detector (LSD)ArchitectureImplementationConference paperhttp://dx.doi.org/10.1109/ICASSP.2009.4959643