Howtosignalprocessing
Three challenges are discussed in terms of implementing massive MIMO: reciprocity error, signal-to-interference ratio (SIR), and channel coherence time.
- What are the difficulties we face in deploying massive MIMO in frequency division duplex systems?
- Which of the following can be considered as the drawbacks of MIMO?
- What are the main parameters affecting the performance of a massive MIMO antenna?
What are the difficulties we face in deploying massive MIMO in frequency division duplex systems?
Deploying MIMO systems in frequency-division duplex mode faces the issue of high feedback overhead of channel state information (CSI) to the transmitter. This issue is attributed to the used multiplexing algorithm. From other hand, it is expected that by 2020, all new 5G technologies will be in operation.
Which of the following can be considered as the drawbacks of MIMO?
Drawbacks or disadvantages of MIMO
➨The resource requirements and hardware complexity is higher compare to single antenna antenna based system. Each antenna requires individual RF units for radio signal processing. Moreover advanced DSP chip is needed to run advanced mathematical signal processing algorithms.
What are the main parameters affecting the performance of a massive MIMO antenna?
Factors influencing performance in real MIMO fading scenarios include a realistic propagation channel, mutual coupling between the antennas, the antenna radiation efficiencies, and the presence of the user, among other factors.
