The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Akihiro Otaka - One of the best experts on this subject based on the ideXlab platform.
-
uplink joint reception with llr forwarding for optical Transmission Bandwidth reduction in mobile fronthaul
Vehicular Technology Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
-
split phy processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
OFC - Split-PHY processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
VTC Spring - Uplink Joint Reception with LLR Forwarding for Optical Transmission Bandwidth Reduction in Mobile Fronthaul
2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
Kenji Miyamoto - One of the best experts on this subject based on the ideXlab platform.
-
uplink joint reception with llr forwarding for optical Transmission Bandwidth reduction in mobile fronthaul
Vehicular Technology Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
-
split phy processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
OFC - Split-PHY processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
VTC Spring - Uplink Joint Reception with LLR Forwarding for Optical Transmission Bandwidth Reduction in Mobile Fronthaul
2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
Jun Terada - One of the best experts on this subject based on the ideXlab platform.
-
first demonstration of Bandwidth allocation scheme for network slicing based tdm pon toward 5g and iot era
Optical Fiber Communication Conference, 2019Co-Authors: Hiroyuki Uzawa, Yukio Hirano, Seiji Kozaki, Kazuaki Honda, Kenichi Nakura, Hirotaka Nakamura, Atsushi Okamura, Jun TeradaAbstract:We propose a Bandwidth allocation scheme for converging 5G mobile fronthaul and IoT networks on a TDM-PON. Experiments show that the scheme can simultaneously provide low-latency Transmission, Bandwidth guarantee, and auto-discovery process.
-
uplink joint reception with llr forwarding for optical Transmission Bandwidth reduction in mobile fronthaul
Vehicular Technology Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
-
split phy processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
OFC - Split-PHY processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
VTC Spring - Uplink Joint Reception with LLR Forwarding for Optical Transmission Bandwidth Reduction in Mobile Fronthaul
2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
M Sawahashi - One of the best experts on this subject based on the ideXlab platform.
-
frequency domain channel dependent scheduling employing an adaptive Transmission Bandwidth for pilot channel in uplink single carrier fdma radio access
Vehicular Technology Conference, 2006Co-Authors: Yoshiaki Ofuji, K Higuch, M SawahashiAbstract:This paper proposes frequency and time domain channel-dependent scheduling employing an adaptive Transmission Bandwidth for the pilot channel for channel quality indication (CQI) measurement in the uplink single-carrier (SC)-FDMA radio access. In the proposed scheme, a high multiuser diversity effect due to frequency domain channel-dependent scheduling is gained by assigning a wide pilot Transmission Bandwidth to user equipments (UEs) near a cell site, whereas the influence of the CQI measurement error is mitigated by assigning a narrow pilot Transmission Bandwidth to UEs near the cell boundary at the cost of utilizing multiuser diversity in the frequency domain. System simulation results elucidate that the cell throughput using the adaptive pilot Transmission Bandwidth with the predetermined threshold, TH SINR , of −6 dB is increased by approximately 600 kbps compared to that using a fixed 1.25-MHz pilot Transmission Bandwidth, i.e., only time domain channel-dependent scheduling, owing to an increasing multiuser diversity effect in the frequency domain. We also show that the user throughput using the adaptive pilot channel Transmission Bandwidth scheme at a 5% cumulative distribution function is increased by approximately 35 and 30 % compared to that using a 5-MHz Transmission for 16 and 32 UEs per cell, respectively, for the inter-site distance of 500 m.
-
VTC Spring - Frequency Domain Channel-Dependent Scheduling Employing an Adaptive Transmission Bandwidth for Pilot Channel in Uplink Single-Carrier-FDMA Radio Access
2006 IEEE 63rd Vehicular Technology Conference, 1Co-Authors: Yoshiaki Ofuji, K Higuch, M SawahashiAbstract:This paper proposes frequency and time domain channel-dependent scheduling employing an adaptive Transmission Bandwidth for the pilot channel for channel quality indication (CQI) measurement in the uplink single-carrier (SC)-FDMA radio access. In the proposed scheme, a high multiuser diversity effect due to frequency domain channel-dependent scheduling is gained by assigning a wide pilot Transmission Bandwidth to user equipments (UEs) near a cell site, whereas the influence of the CQI measurement error is mitigated by assigning a narrow pilot Transmission Bandwidth to UEs near the cell boundary at the cost of utilizing multiuser diversity in the frequency domain. System simulation results elucidate that the cell throughput using the adaptive pilot Transmission Bandwidth with the predetermined threshold, TH SINR , of −6 dB is increased by approximately 600 kbps compared to that using a fixed 1.25-MHz pilot Transmission Bandwidth, i.e., only time domain channel-dependent scheduling, owing to an increasing multiuser diversity effect in the frequency domain. We also show that the user throughput using the adaptive pilot channel Transmission Bandwidth scheme at a 5% cumulative distribution function is increased by approximately 35 and 30 % compared to that using a 5-MHz Transmission for 16 and 32 UEs per cell, respectively, for the inter-site distance of 500 m.
Shigeru Kuwano - One of the best experts on this subject based on the ideXlab platform.
-
uplink joint reception with llr forwarding for optical Transmission Bandwidth reduction in mobile fronthaul
Vehicular Technology Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
-
split phy processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
OFC - Split-PHY processing architecture to realize base station coordination and Transmission Bandwidth reduction in mobile fronthaul
Optical Fiber Communication Conference, 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose a new RAN architecture splitting BS functions within PHY layer. It reduces mobile fronthaul Transmission Bandwidth by 90 % and achieves BS coordination performance with 0.5 dB SNR degradation compared to conventional C-RAN.
-
VTC Spring - Uplink Joint Reception with LLR Forwarding for Optical Transmission Bandwidth Reduction in Mobile Fronthaul
2015 IEEE 81st Vehicular Technology Conference (VTC Spring), 2015Co-Authors: Kenji Miyamoto, Jun Terada, Shigeru Kuwano, Akihiro OtakaAbstract:We propose an uplink joint reception method for coordinated multi-point Transmission and reception (CoMP) where the quantized log likelihood ratio (LLR) is forwarded by an optical interface different from the common public radio interface (CPRI), to suppress the explosive increase in the optical Transmission Bandwidth in the mobile fronthaul (MFH) of the centralized/cloud radio access network (C-RAN) and thus reduce the MFH optical Transmission cost of future radio access. To exploit the proposed method, we focus on the split-PHY processing (SPP) architecture for MFH redefinition where the base station (BS) functions are split between modulation and channel coding functions within the PHY (Physical) layer. Numerical simulations of block error rate (BLER) performance confirm a signal to noise ratio (SNR) degradation due to the proposed method in the SPP architecture of less than 3 dB compared with the conventional C-RAN, and an SNR improvement compared to the performance without joint reception of more than 5 dB. Meanwhile, numerical calculations that assume future radio access show that the SPP architecture with the proposed method reduces MFH optical Transmission Bandwidth by at least 85 % compared to the conventional C-RAN. These results show that the SPP architecture with the proposed method will enable cost-effective MFH deployment.
