Fig. 9From: User association and channel assignment in downlink multi-cell NOMA networks: A matching-theoretic approachPercentage of channel assignment—Scenario 1. a U3 (U-SM). b U3 (BS-SM). c U4 (U-SM). d U4 (BS-SM). e U5 (U-SM). f U5 (BS-SM). g U6 (U-SM). h U6 (BS-SM). i U9 (U-SM). j U9 (BS-SM)Back to article page