1 of 13

Quantum and Quantum-Inspired Computing

for Large-Scale NOMA-MIMO Wireless Networks

Interns: Jeffrey Tang, Alex Markley

Advisors: Minsung Kim, Byungjun Kim

1

Week 3

2 of 13

Construct physical implementation of ParaMax: Quantum-Inspired Algorithm for Maximum Likelihood Signal Detection

2

Goal

3 of 13

3

Progress

Task	Status
Orbit Grid Access	Complete
MIMO Rack Test	Complete
Offline Preamble Generation (MATLAB)	In Progress
Creating custom OOT (Python/C++) blocks for GNURadio	In Progress
Simultaneous Transmission for Multiple Tx on Grid	In Progress
Frame Synchronization on Orbit Grid	Not Started

4 of 13

Under ideal cases, no interference. Realistically, what is transmitted is not what is received.

4

MIMO Detection

5 of 13

Work backwards by finding the data that was most likely sent given the channel state and recv’d data. This is an optimization problem now.

5

MIMO Detection

6 of 13

Sample possible x values and start to settle into a minima if we find one.

6

ParaMax

MIMO Detection

7 of 13

Add multiple parallel annealers, one that stays near the best solution so far and one that explores for a better minima.

7

ParaMax

MIMO Detection

8 of 13

Signals from multiple transmitters can interfere with each other at the receiver.

8

MIMO Detection

9 of 13

The preamble is used for ensure nodes are synchronized on time slots and minor changes in the frequency can be adjusted for.

9

Progress

10 of 13

The preamble is used for ensure nodes are synchronized on time slots and minor changes in the frequency can be adjusted for.

10

Progress

11 of 13

The preamble is used for ensure nodes are synchronized on time slots and minor changes in the frequency can be adjusted for.

11

Progress

12 of 13

Next Steps

Send preamble from multiple nodes (at least 2)
Check preamble at receiver (MIMO rack) and confirm synchronization

12

13 of 13

Thank you!

Any Questions?

13