Keyword : spectral efficiency


Fronthaul Constrained Coordinated Transmission in Cloud-Based 5G Radio Access Network: Energy Efficiency Perspective
Ying SUN Yang WANG Yuqing ZHONG 
Publication:   
Publication Date: 2017/08/01
Vol. E100-B  No. 8 ; pp. 1343-1351
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System)
Category: Network
Keyword: 
mobile systemcloud radio access networkcoordinated multi-pointspectral efficiencyenergy efficiency
 Summary | Full Text:PDF(1.4MB)

Performance Analysis of Distributed OSTBC-MIMO Systems Using Adaptive M-QAM Transmission over i.n.i.d. Generalized-K Fading Channels
Jie HE Kun XIAO 
Publication:   
Publication Date: 2017/05/01
Vol. E100-B  No. 5 ; pp. 843-851
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OSTBCMIMOgeneralized-K fading channeloutage probabilityspectral efficiencysymbol error probability
 Summary | Full Text:PDF(958.2KB)

Multiple Multicast Transmission Exploiting Channel Simplification
Changyong SHIN Yong-Jai PARK 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/09/01
Vol. E99-A  No. 9 ; pp. 1745-1749
Type of Manuscript:  LETTER
Category: Communication Theory and Signals
Keyword: 
multicastchannel simplificationinterferencespectral efficiencysum rate
 Summary | Full Text:PDF(341.3KB)

Analysis over Spectral Efficiency and Power Scaling in Massive MIMO Dual-Hop Systems with Multi-Pair Users
Yi WANG Baofeng JI Yongming HUANG Chunguo LI Ying HU Yewang QIAN Luxi YANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/09/01
Vol. E99-A  No. 9 ; pp. 1665-1673
Type of Manuscript:  PAPER
Category: Information Theory
Keyword: 
massive MIMOdual-hopmulti-pair usersspectral efficiencypower scaling
 Summary | Full Text:PDF(2MB)

Adaptive Band Activity Ratio Control with Cascaded Energy Allocation for Amplify-and-Forward OFDM Relay Systems
Quang Thang DUONG Shinsuke IBI Seiichi SAMPEI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/11/01
Vol. E97-B  No. 11 ; pp. 2424-2434
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
dynamic spectrum controlspectral efficiencyamplify-and-forwardtransmit energy constraintOFDMenergy allocationconvex optimizationDCMC capacityCCMC capacity
 Summary | Full Text:PDF(1.5MB)

Improved Spectral Efficiency at Reduced Outage Probability for Cooperative Wireless Networks by Using CSI Directed Estimate and Forward Strategy
Yihenew Wondie MARYE Chen LIU Feng LU Hua-An ZHAO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1 ; pp. 7-17
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: Foundations
Keyword: 
cooperative communicationamplify-and-forward (AF)decode-and-forward (DF)spectral efficiencychannel state information (CSI)
 Summary | Full Text:PDF(1.5MB)

Unified Time-Frequency OFDM Transmission with Self Interference Cancellation
Changyong PAN Linglong DAI Zhixing YANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/04/01
Vol. E96-A  No. 4 ; pp. 807-813
Type of Manuscript:  PAPER
Category: Communication Theory and Signals
Keyword: 
orthogonal frequency division multiplexingtraining sequenceinterference cancellationlow complexityspectral efficiency
 Summary | Full Text:PDF(936.6KB)

Study on Resource Optimization for Heterogeneous Networks
Gia Khanh TRAN Shinichi TAJIMA Rindranirina RAMAMONJISON Kei SAKAGUCHI Kiyomichi ARAKI Shoji KANEKO Noriaki MIYAZAKI Satoshi KONISHI Yoji KISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/04/01
Vol. E95-B  No. 4 ; pp. 1198-1207
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011)
Category: 
Keyword: 
heterogeneous networkspectrum allocationpower allocationcell range expansionspectral efficiency
 Summary | Full Text:PDF(1.4MB)

Continuous-Phase, Unmodulated Parallel-Combinatory High-Compaction Multicarrier Modulation
Ryuji HAYASHI Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3 ; pp. 802-805
Type of Manuscript:  LETTER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
PC signalingHC-MCMcontinuous-phase modulationspectral efficiency
 Summary | Full Text:PDF(812.7KB)

Ultra-Long-Haul WDM Transmission with High Spectral Efficiency
Yi CAI Jin-Xing CAI Carl R. DAVIDSON Dmitri G. FOURSA Alan J. LUCERO Oleg V. SINKIN Yu SUN Alexei N. PILIPETSKII Georg MOHS Neal S. BERGANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/02/01
Vol. E94-B  No. 2 ; pp. 392-399
Type of Manuscript:  INVITED PAPER (Special Section on Extremely Advanced Optical Transmission Technologies and Transmission Optical Fiber Technologies towards Exabit Era)
Category: 
Keyword: 
optical fiber communicationspectral efficiencycoherent detectionpre-filteringMAP detection
 Summary | Full Text:PDF(1.5MB)

256 QAM Digital Coherent Optical Transmission Using Raman Amplifiers
Masato YOSHIDA Seiji OKAMOTO Tatsunori OMIYA Keisuke KASAI Masataka NAKAZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/02/01
Vol. E94-B  No. 2 ; pp. 417-424
Type of Manuscript:  Special Section PAPER (Special Section on Extremely Advanced Optical Transmission Technologies and Transmission Optical Fiber Technologies towards Exabit Era)
Category: 
Keyword: 
coherent transmissionquadrature amplitude modulationspectral efficiencyfrequency-stabilized laseroptical phase-locked loop
 Summary | Full Text:PDF(1.4MB)

Constant Power Allocation Methods for SC-FDMA Systems
Wei-Cheng PAO Yung-Fang CHEN Dah-Chung CHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3 ; pp. 771-775
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
SC-FDMAspectral efficiencypower allocationwaterfilling methods
 Summary | Full Text:PDF(318.8KB)

Channel-Gain-Based Transmission Scheduling for Cooperative Relaying
Naotaka SHIBATA Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3 ; pp. 776-779
Type of Manuscript:  LETTER
Category: Terrestrial Radio Communications
Keyword: 
cooperative relayingtransmission schedulingspectral efficiency
 Summary | Full Text:PDF(228.5KB)

Adaptive Decode-and-Forward Cooperative Networks with Limited Feedback
Ha Nguyen VU Hyung Yun KONG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/02/01
Vol. E93-B  No. 2 ; pp. 415-418
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
adaptive cooperationdecode and forwardspectral efficiencyBER performancepower allocation
 Summary | Full Text:PDF(187.9KB)

A Low-PAPR Multiplexed MC-CDMA System with Enhanced Data Rate and Link Quality
Juinn-Horng DENG Jeng-Kuang HWANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/01/01
Vol. E93-B  No. 1 ; pp. 135-143
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multi-carrier CDMA (MC-CDMA)cyclic-shift orthogonal keying (CSOK)spectral efficiencylink qualitypeak-to-average power ratio (PAPR)
 Summary | Full Text:PDF(878.8KB)

Capacity Analysis of Cooperative Relaying Networks with Adaptive Relaying Scheme Selection
Kunihiko TESHIMA Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12 ; pp. 3744-3752
Type of Manuscript:  PAPER
Category: Network
Keyword: 
cooperative relayingmultihopspectral efficiencyadaptive controlgame theory
 Summary | Full Text:PDF(529KB)

A Simple Performance Approximation for Multi-Hop Decode-and-Forward Relaying over Rayleigh Fading Channels
Bao Quoc VO-NGUYEN Hyung Yun KONG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/11/01
Vol. E92-B  No. 11 ; pp. 3524-3527
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
multi-hop relayingrayleigh fadingdecode-and-forward relayingbit error probabilitysymbol error probabilityspectral efficiencyprobability of SNR gain
 Summary | Full Text:PDF(199.8KB)

Improved Subcarrier Allocation in Multi-User OFDM Systems
Won Joon LEE Jaeyoon LEE Dongweon YOON Sang Kyu PARK 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/12/01
Vol. E91-B  No. 12 ; pp. 4030-4033
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
OFDMsubcarrier allocationoutage probabilityspectral efficiency
 Summary | Full Text:PDF(161KB)

Spectral Efficiency Improvement of OFDM by Using Time Domain Superimposition of Data
JunKyoung LEE JangHoon YANG DongKu KIM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/10/01
Vol. E91-B  No. 10 ; pp. 3355-3359
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
OFDMsuperimpositionspectral efficiencyPAPR
 Summary | Full Text:PDF(131.2KB)

Optimum Wavelength Filter Spectrum Response in DWDM Systems for Ultimate Spectral Efficiency
Shuichi SUZUKI Yasuo KOKUBUN 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/09/01
Vol. E88-B  No. 9 ; pp. 3649-3659
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
WDMwavelength multi/demultiplexerspectral efficiencycrosstalkcascaded filtercrosstalk floor
 Summary | Full Text:PDF(1.7MB)

Ultra-Dense WDM with over 100% Spectral Efficiency Using Co-polarized 40-Gb/s Inverse-RZ Signals
Masahiro OGUSU Kazuhiko IDE Shigeru OHSHIMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1 ; pp. 195-202
Type of Manuscript:  PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
dense WDM systemsspectral efficiency40 Gb/sinverse-RZ signals
 Summary | Full Text:PDF(2.1MB)

Study of Orthogonal SSB Modulation Method
Gen-ichiro OHTA Mitsuru UESUGI Takuro SATO Hideyoshi TOMINAGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/10/01
Vol. E87-A  No. 10 ; pp. 2676-2683
Type of Manuscript:  Special Section PAPER (Special Section on Wide Band Systems)
Category: 
Keyword: 
spectral efficiencysingle side bandHilbert transformsorthogonal modulation systemNyquist transmissionwideband
 Summary | Full Text:PDF(1.3MB)

A Practical Adaptive TuCM for Fading Channel
Shouhao WU Wentao SONG Hanwen LUO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/08/01
Vol. E86-C  No. 8 ; pp. 1564-1571
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
adaptive coded modulationTuCMspectral efficiencydelaychannel estimation error
 Summary | Full Text:PDF(639.5KB)

Bi-Orthogonal Modulation Systems Using Two Different Inner Sequences
Kouji OHUCHI Hiromasa HABUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12 ; pp. 2976-2982
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
bi-orthogonal modulation systemframe synchronizationinner sequencecode shift keyingspectral efficiency
 Summary | Full Text:PDF(624.2KB)

Performance Evaluation of DS/CDMA Communications Systems Modulated with π/2-Shift BPSK over Multipath Rayleigh Fading Channels
M. M. Asadullah GALIB Takaya YAMAZATO Masaaki KATAYAMA Akira OGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11 ; pp. 2304-2310
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
π/2-shift BPSKDS/SS/CDMAsoft/hard-limiterout-of-band powerspectral efficiencyRAKE receiver
 Summary | Full Text:PDF(645.1KB)

Double M-Ary/Spread Spectrum Communication Systems
Kentaro TAKEUCHI Masanori HAMAMURA Sin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/25
Vol. E81-A  No. 10 ; pp. 2064-2072
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum System
Keyword: 
spread spectrumM-ary/SSdouble M-ary/SSspectral efficiency
 Summary | Full Text:PDF(739KB)

Spectral Efficiency Improvement by Base Station Antenna Pattern Control for Land Mobile Cellular Systems
Takeo OHGANE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/05/25
Vol. E77-B  No. 5 ; pp. 598-605
Type of Manuscript:  Special Section PAPER (Special Issue on Adaptive Signal Processing in Mobile Radio Communications)
Category: 
Keyword: 
co-channel interferencecellular systemadaptive arrayspectral efficiency
 Summary | Full Text:PDF(608.5KB)

Performance of Asynchronous Band-Limited DS/SSMA Systems
Takafumi SHIBATA Masaaki KATAYAMA Akira OGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/08/25
Vol. E76-B  No. 8 ; pp. 921-928
Type of Manuscript:  Special Section PAPER (Special Issue on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
direct-sequence spread-spectrum multiple-accesssignal-to-noise plus interference ratioband-limitationspectral efficiencygold sequence
 Summary | Full Text:PDF(490.5KB)

Characteristics of M-Ary/Spread Spectrum Multiple Access Communication Systems Using Co-Channel Interference Cancellation Techniques
Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/08/25
Vol. E76-B  No. 8 ; pp. 941-946
Type of Manuscript:  Special Section PAPER (Special Issue on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread spectrum communication systemDS/SSMAM-ary/SSMAco-channel interference cancellationspectral efficiency
 Summary | Full Text:PDF(447KB)

Modulation in Spread Spectrum Communication Systems
Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/06/25
Vol. E75-B  No. 6 ; pp. 445-452
Type of Manuscript:  INVITED PAPER (Special Issue on Communication Theory)
Category: 
Keyword: 
modulationspread spectrumM-ary/SSMAspectral efficiency
 Summary | Full Text:PDF(546.3KB)