Скачать с ютуб Lecture 9: Downlink Multiuser MIMO With Linear Processing в хорошем качестве

Lecture 9: Downlink Multiuser MIMO With Linear Processing

This is the video for Lecture 9 in the course Multiple Antenna Communications at Linköping University and KTH. The lecture covers: Downlink communication with linear precoding. Lower bound on the capacity. Closed-form expression with MR processing. Similarities and differences between uplink and downlink. The slides are available here: https://github.com/emilbjornson/multi... 0:00 Introduction 2:08 Downlink Massive MIMO system model • Received signal 3:59 Linear precoding . Select transmitted signal as 8:58 Rewriting the received downlink signal 14:09 Capacity lower bound with any precoding 17:51 How to select precoding? • Recall: Uplink processing 21:49 Downlink capacity lower bound with MR 23:53 Comparing uplink and downlink (with MR) Downlink 25:51 Example: Uplink rate, varying SNR 29:57 Example: Uplink rate, different schemes 31:16 Example: Rate when scaling number of users 34:10 Example: Sum rate, scaling number of users 36:06 What are the benefits of MR processing? • Lower computational complexity Substantial performance loss in theory . Practical loss is smaller since MR easier to implement