This document provides updates to IEEE Std 802.16's MIB for the MAC, PHY and asso- ciated management procedures in order to accommodate recent extensions to the standard.

IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions

In-band full-duplex (IBFD) technology can enable unique system capabilities and network architectures by allowing devices to transmit and receive on the same frequency at the same time. While previously considered impossible, this ability can now be used to optimize resource sharing within the crowded frequency spectrum for various communication systems, including 5G new radio. The potential of these IBFD systems can only be realized if each device incorporates a sufficient number of self-interference cancellation techniques to ensure that its receivers do not saturate. This tutorial survey offers the most comprehensive collection to date of these techniques and discusses how all of them can be implemented within the different domains of a typical transceiver. In addition, the results of a novel IBFD system study are presented for more than 50 demonstrated communication systems with more than 80 different measurement scenarios. The various system parameters are then combined into a new figure of merit, which can be used to propel future research and accelerate the inclusion of IBFD technology within an upcoming wireless standard.

In-Band Full-Duplex Technology: Techniques and Systems Survey

Fast and reliable time and frequency synchronization is crucial for packet-based orthogonal frequency division multiplex (OFDM) systems. In this paper we compare and analyze preambles for OFDM systems based on repeated OFDM data symbols or repeated short pseudonoise sequences (PN-sequences). We make an analytical evaluation for AWGN channels and simulate the performance in oneand two-tap Rayleigh fading channels. The PN-based preamble gives better detection properties in terms of lower false detection probability and lower probability of missing the synchronization signal. The PN-based preamble has low peak-to-average power ratio and it makes it possible to use an ADC with one-bit quantization in stand-by mode. For frequency offset estimation both preambles give similar performance, but the PN-based preamble allows for a greater reduction in stand-by mode power consumption.

Time and Frequency Synchronization for BRAN using PN-sequence Preambles

A block-request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be served by the file server, which might or might not include a cache. A client device can be adapted to take advantage of the ingestion process as well as including improvements that make for a better presentation independent of the ingestion process. In the block-request streaming system, the an ingestion system generates data according to erasure codes and the client device, through various selection and timing of requests for media data and redundant data, can efficiently decode media to provide for presentations.

Enhanced block-request streaming using cooperative parallel HTTP and forward error correction

The embodiments described herein methods and devices that enhance the endurance of a non-volatile memory (e.g., flash memory). The method includes obtaining, for each of the plurality of die, an endurance metric. The method also includes sorting the plurality of die into a plurality of die groups based on their corresponding endurance metrics, where each die group includes one or more die and each die group is associated with a range of endurance metrics. In response to a write command specifying a set of write data, the method further includes writing the write data to the non-volatile memory by writing in parallel subsets of the write data to the one or more die assigned to a single die group of the plurality of die groups.

Device and method for managing die groups

This paper presents the efficient structure and parameter optimization of downlink beamforming transmitter in OFDMA/TDD system To design downlink beamforming transmitter for multiple transmit antennas, an efficient beamforming structure for multiple users and the choice of word-length of main data path are critical in the aspect of its performance and hardware complexity We propose an efficient beamforming scheme, which calculates the weights for corresponding user in a subcarrier unit of IFFT input at high speed to reduce the hardware complexity and processing time of transmitter and receiver Also, we obtain the word-length of main data path and other design parameters by simulation analysis The proposed architecture could reduce the memory size proportional to the maximum number of users per frame, and the processing time of an OFDM symbol at the receiver of base station without the need of an additional processing time for calculating the weights at the transmitter

Design and Implementation of Efficient Beamforming Transmitter in OFDMA/TDD System

In this paper, we consider a beamforming technique and relay selection method in two-way relaying systems employing physical network coding where the relays are equipped with multiple antennas. In order to exploit the benefits of multiple antennas, we design an efficient closed-form beamforming vector. Furthermore, to achieve diversity gain from multiple relays, we suggest the minimum distance based relay selection criterion. Since the minimum distance based approach generally requires a huge search size, we also propose a method to calculate the minimum distance with the reduced search size. Simulation results confirm that the proposed schemes are able to attain the full diversity order which results from both beamforming and relay selection.

Beamforming and relay selection schemes for multi-antenna two-way relaying systems with physical network coding

Provided are a signal detector for an uplink control channel and a time error correction method capable of simply correcting time errors, which occur during adjustment of a starting point of an FFT of an uplink control channel signal, by use of differential demodulation and thus improving the signal detection performance of an uplink control channel.

Signal detector for uplink control channel and time error correction method thereof

The 3-dimensional beamforming is a highly attractive issue in 5G telecommunication. Equipped with 2-dimensional antenna arrays, it allows vertical sectorization within a cell as well as horizontal one, by making a beamforming zone for the corresponding sector. However, there is considerable inequality among the areas of beamforming zone. Since the farther from the base station, the bigger the beamforming zone area is, the farther beamforming zone area is likely support more users than nearer beamforming zone. In this paper, we propose to utilize carrier aggregation (CA) from additional base stations for relieving the uneven beamforming zone area problem and prove this method is more efficient in improving cell throughput especially in mmWave environment. Even if the additional base station is more simple type which offers only a few beamformings, it can effectively improve the equality of UE's radio resource occupation.

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Improving beam distribution evenness in 3-dimensional beamforming with carrier aggregation

This paper describes the physical layer modem structure of Giga KOREA 5G system which is being developed by ETRI as a 5G telecommunications prototype. The objective of Giga KOREA 5G system is supporting maximum 100 Gbps data rate for each cell with wide-bandwidth baseband station and mobile station prototypes in mmWave (10~40 GHz) environment. To achieve this objective, its physical layer is composed of high performance baseband station as well as mobile station and their OFDM TDD modems. The important features of Giga KOREA 5G physical layer are carrier aggregation, multiple receiving beam searching in mobile station, high data rate channel encoder and decoder and high speed modulation and demodulation functions.

Youn-Ok Park

Papers

Design and Implementation of Efficient Beamforming Transmitter in OFDMA/TDD System

Beamforming and relay selection schemes for multi-antenna two-way relaying systems with physical network coding

Signal detector for uplink control channel and time error correction method thereof

Improving beam distribution evenness in 3-dimensional beamforming with carrier aggregation

Physical Layer Modem Implementation for mmWave 5G Mobile Communication