Comments on: Real-Time Massive MIMO DSP at 50 milliWatt
http://ma-mimo.ellintech.se/2017/04/12/real-time-massive-mimo-dsp-at-50-milliwatt/
News - commentary - mythbustingThu, 21 Jun 2018 20:25:00 +0000hourly1https://wordpress.org/?v=4.9.6By: Erik G. Larsson
http://ma-mimo.ellintech.se/2017/04/12/real-time-massive-mimo-dsp-at-50-milliwatt/#comment-380
Thu, 13 Apr 2017 07:18:01 +0000http://ma-mimo.ellintech.se/?p=435#comment-380Agreed on “cubically”; the statement should read “resulting in a much-faster overall complexity scaling.” Thanks for spotting this.
]]>By: Minhhai Tran
http://ma-mimo.ellintech.se/2017/04/12/real-time-massive-mimo-dsp-at-50-milliwatt/#comment-378
Wed, 12 Apr 2017 23:15:44 +0000http://ma-mimo.ellintech.se/?p=435#comment-378I think that the circuit complexity scale is not cubical, instead I believe it is square instead because:
1) The latency of Gramma matrix calculator, more precisely the latency of Multiply Accumulator (MAC) is linearly proportional to the number of antenna of BS. The number of MAC is square proportional to the number of UE.
2) If we only utilize Matched Filter (MF) and Inverse of the Diagonal of the Gramma matrix for MU-MIMO detector. If the MF is implemented by a Matrix-Vector Multiplier Systolic Array, the latency of the MAC is proportional to the antenna of BS, and the size of Matrix-Vector Multiplier for is proportional to the number of user.
]]>