Performance evaluation on NOMA and transmit BF with user selection by the number of beams
| Autor: | Hideo Makino, Yoshiki Shirasawa, Kentaro Nishimori |
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| Rok vydání: | 2017 |
| Předmět: |
Minimum mean square error
Frequency band Computer science ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS MIMO 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Interference (wave propagation) Base station 020210 optoelectronics & photonics Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Bit error rate Electronic engineering Computer Science::Information Theory Communication channel |
| Zdroj: | 2017 International Symposium on Antennas and Propagation (ISAP). |
| Popis: | As a technique for improving the transmission rate within a limited frequency band, Multiuser MIMO (MU-MIMO), which realizes MIMO transmission with multiple user terminals, has been attracted much attention. However, it is not possible to communicate with the users that exceed the number of base station (BS) antennas in the MU-MIMO transmission. We have proposed a method by using non orthogonal multiple access (NOMA) and Zero Forcing (ZF) at the BS and Minimum Mean Square Error (MMSE) at user terminals (UTs). In this paper, we evaluate the performance when the number of beams with NOMA applied is increased up to four by computer simulation using actual propagation channel. Furthermore, we propose a scheduling algorithm for 6-user and 3-beam at the BS that reduce the performance degradation by interference among users and verify that the improvement on the bit error rate by the propose method. |
| Databáze: | OpenAIRE |
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