Yin, BeiWu, MichaelStuder, ChristophCavallaro, Joseph R.Dick, Chris2013-10-252013-10-252013-06B. Yin, M. Wu, C. Studer, J. R. Cavallaro and C. Dick, "Implementation Trade-Offs For Linear Detection In Large-Scale MIMO Systems," 2013.https://hdl.handle.net/1911/75010In this paper, we analyze the VLSI implementation tradeoffs for linear data detection in the uplink of large-scale multiple-input multiple-output (MIMO) wireless systems. Specifically, we analyze the error incurred by using the suboptimal, low-complexity matrix inverse proposed in Wu et al., 2013, ISCAS, and compare its performance and complexity to an exact matrix inversion algorithm. We propose a Cholesky-based reference architecture for exact matrix inversion and show corresponding implementation results on an Virtex-7 FPGA. Using this reference design, we perform a performance/complexity trade-off comparison with an FPGA implementation for the proposed approximate matrix inversion, which reveals that the inversion circuit of choice is determined by the antenna configuration (base-station antennas vs. number of users) of large-scale MIMO systems.engLarge-scale MIMOlinear detectionapproximate matrix inversionFPGA implementationConference paperhttp://dx.doi.org/10.1109/ICASSP.2013.6638142