An SNR-improved transmitter of delta-sigma modulation supported ultra-high-order QAM signal for fronthaul/WiFi applications
In this paper, we proposed an improved mobile fronthaul architecture employing the SNR-
improved delta-sigma digitization scheme and 4-level pulse amplitude modulation (PAM-4) …
improved delta-sigma digitization scheme and 4-level pulse amplitude modulation (PAM-4) …
65,536-QAM OFDM signal transmission over a fiber-THz system at 320 GHz with delta-sigma modulation
J Shi, J Yu, J Zhang, M Zhu, L Zhang, K Wang… - Optics Letters, 2023 - opg.optica.org
The transmission of a 65,536-ary quadrature amplitude modulation (QAM) orthogonal
frequency division multiplexing (OFDM) signal supported by a hybrid fiber–terahertz (THz) …
frequency division multiplexing (OFDM) signal supported by a hybrid fiber–terahertz (THz) …
Digital mobile fronthaul based on performance enhanced multi-stage noise-shaping delta-sigma modulator
A novel topology multi-stage noise-shaping (MASH) delta-sigma modulator is proposed for
20-km digital mobile fronthaul (MFH) in this article. In the proposed MASH structure, a newly …
20-km digital mobile fronthaul (MFH) in this article. In the proposed MASH structure, a newly …
Distributed antenna system using sigma-delta intermediate-frequency-over-fiber for frequency bands above 24 GHz
The fifth generation (5G) cellular network is expected to include the millimeter wave
spectrum, to increase base station density, and to employ higher-order multiple-antenna …
spectrum, to increase base station density, and to employ higher-order multiple-antenna …
Flexible mm-Wave sigma-delta-over-fiber MIMO link
Millimeter-wave and multiple-input-multiple-output (MIMO) technologies combine broad
bandwidth with spatial diversity to offer a greater data rate. This paper investigates a flexible …
bandwidth with spatial diversity to offer a greater data rate. This paper investigates a flexible …
EVM Analysis of Distributed Massive MIMO with 1-Bit Radio-Over-Fiber Fronthaul
We analyze the uplink performance of a distributed massive multiple-input multiple-output
(MIMO) architecture in which the remotely located access points (APs) are connected to a …
(MIMO) architecture in which the remotely located access points (APs) are connected to a …
A TDD distributed MIMO testbed using a 1-bit radio-over-fiber fronthaul architecture
L Aabel, S Jacobsson, M Coldrey… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
We present the uplink and downlink of a time-division duplex distributed multiple-input
multiple-output (D-MIMO) testbed, based on a 1-bit radio-over-fiber architecture, which is low …
multiple-output (D-MIMO) testbed, based on a 1-bit radio-over-fiber architecture, which is low …
A novel structure optimizer based on heuristic search for delta-sigma modulator in mobile fronthaul
In this letter, a novel delta-sigma modulator structure design method based on the genetic
algorithm is proposed. Compared to the widely adopted R. Schreier's method, the proposed …
algorithm is proposed. Compared to the widely adopted R. Schreier's method, the proposed …
Noise shaping enhanced DMT signal transmission utilizing low-resolution DAC
In order to reduce the quantization noise of low-resolution DAC, we study a noise shaping
technique that can reshape the white quantization noise to an irregular spectrum, in which …
technique that can reshape the white quantization noise to an irregular spectrum, in which …
6G radio testbeds: Requirements, trends, and approaches
The proof of the pudding lies in eating, and that is why 6G testbeds are essential in the
progress toward the next generation of wireless networks. Theoretical research toward 6G …
progress toward the next generation of wireless networks. Theoretical research toward 6G …