Masafumi MORIYAMA

Use of Cyclic-Delay Diversity (CDD) with Modified Channel Estimation for FER Improvement in OFDM Downlink
Masafumi MORIYAMA Kenichi TAKIZAWA Hayato TEZUKA Fumihide KOJIMA 
Publication:   
Publication Date: 2022/03/01
Vol. E105-B  No. 3  pp. 326-337
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
IoT, OFDM, STBC, CDD, channel estimation, 
 Summary | Full Text:PDF
Experimental Evaluation of a Novel Up-Link NOMA System for IoT Communication Equipping Repetition Transmission and Receive Diversity
Masafumi MORIYAMA Kenichi TAKIZAWA Masayuki OODO Hayato TEZUKA Fumihide KOJIMA 
Publication:   
Publication Date: 2019/08/01
Vol. E102-B  No. 8  pp. 1467-1476
Type of Manuscript:  Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond)
Category: 
Keyword: 
IoT, NOMA, SIC, SD, RT, 
 Summary | Full Text:PDF
Novel Synchronization and BER Improvement Method for Public Safety Mobile Communication Systems Employing Heterogeneous Cognitive Radio
Masafumi MORIYAMA Takeo FUJII 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/04/01
Vol. E98-B  No. 4  pp. 736-745
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
public safety, cognitive radio, synchronization, π/4 shift QPSK, 
 Summary | Full Text:PDF
A Novel Method of Estimating the Signal-to-Interference Ratio for One-Cell-Frequency-Reuse OF/TDMA Systems
Masafumi MORIYAMA Hiroshi HARADA Seiichi SAMPEI Ryuhei FUNADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 247-257
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OF/TDMA, one-cell-frequency-reuse, SIR, AMC, MIMO, carrier interferometry, 
 Summary | Full Text:PDF