A study of digital techniques for signal processing Final status report, 1 Jul. 1968 - 31 Jan. 1969

Digital signal processing, data smoothing, and computer simulatio

A study of digital techniques for signal processing Semiannual status report, 1 Feb. - 31 Jul. 1970

Adaptive array processing, dynamic programming, digital data transmission, recursive adaptive equalizers, and finite memory communication system

A study of digital techniques for signal processing

Analysis and definition of digital techniques for signal processin

A study of digital techniques for signal processing Semiannual status report, 1 Feb. - 30 Jun. 1968

Recursive techniques for digital signal processing, data smoothing and compression, and computer simulation of low error rate communicatio

Investigation of zero-crossings as information carriers

Analysis of bandlimited signal transmission by zero crossings of optimum signa

Measurement-Adaptive Cellular Random Access Protocols

This work considers a single-cell random access channel (RACH) in cellular wireless networks. Communications over RACH take place when users try to connect to a base station during a handover or when establishing a new connection. Within the framework of Self-Organizing Networks (SONs), the system should self- adapt to dynamically changing environments (channel fading, mobility, etc.) without human intervention. For the performance improvement of the RACH procedure, we aim here at maximizing throughput or alternatively minimizing the user dropping rate. In the context of SON, we propose protocols which exploit information from measurements and user reports in order to estimate current values of the system unknowns and broadcast global action-related values to all users. The protocols suggest an optimal pair of user actions (transmission power and back-off probability) found by minimizing the drift of a certain function. Numerical results illustrate considerable benefits of the dropping rate, at a very low or even zero cost in power expenditure and delay, as well as the fast adaptability of the protocols to environment changes. Although the proposed protocol is designed to minimize primarily the amount of discarded users per cell, our framework allows for other variations (power or delay minimization) as well.Comment: 31 pages, 13 figures, 3 tables. Springer Wireless Networks 201