Name
Abstract | ||
|---|---|---|
It is known that when the constellation points of the combined signal are close to each other in conventional SIC, the received signals will be corrupted severely by mutual interference. To tackle this problem, an improved Successive Interference Cancellation (SIC) in the uplink Non-orthogonal multiple access (NOMA) system has been proposed in this paper. Specifically, artificial time offsets have been inserted into each transmission to achieve higher degrees of freedom for the power levels of users and cancel the mutual interference. Besides, inserted time offsets can introduce additional resources to increase the accuracy of recognizing the superimposed signals at the receiver side. Our goal is to minimize the error probability of the users' transmission by searching for optimal power allocation. Computer simulation under the 3-user case displays that the improved SIC's bit error rate (BER) performance outperforms the P-NOMA with other SIC-based schemes. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.1109/VTC2021-FALL52928.2021.9625363 | 2021 IEEE 94TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2021-FALL) |
Keywords | DocType | ISSN |
NOMA, uplink, multiuser detection, improved successive interference cancellation, power allocation | Conference | 2577-2465 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
5 | ||