Title :
SDMA techniques for wireless ATM
Author :
Vornefeld, Ulrich ; Walke, Christoph ; Walke, Bernhard
Author_Institution :
Tech. Hochschule Aachen, Germany
fDate :
11/1/1999 12:00:00 AM
Abstract :
The introduction of space-division multiple access techniques into wireless ATM systems is presented. The concepts are embedded in the framework of the HIPERLAN/2 system, which is currently under standardization by the ETSI Broadband Radio Access Networks (BRAN) project. HIPERLAN/2 aims at the provision of broadband services with guaranteed QoS. Originally started as a WATM standardization initiative, its scope has been broadened and now aims at core network independence. Essential system functions, such as scheduling algorithms and random access, are reviewed in light of the spatial dimension. To give an impression of their performance, some key results are discussed. Although adopted for HIPERLAN/2, the ideas are generally applicable and can be transferred to various systems
Keywords :
access protocols; array signal processing; asynchronous transfer mode; broadband networks; direction-of-arrival estimation; linear antenna arrays; packet radio networks; performance evaluation; quality of service; radio access networks; research initiatives; space division multiple access; standardisation; wireless LAN; BRAN; Broadband Radio Access Networks; DOA; ETSI project; HIPERLAN/2 system; MAC protocol; SDMA techniques; WATM standardization initiative; broadband services; core network independence; directions of arrival; guaranteed QoS; performance; random access; scheduling algorithms; space-division multiple access; spatial dimension; standardization; uniform linear antenna array; wireless ATM systems; Antenna feeds; Antennas and propagation; Baseband; Frequency; Multiaccess communication; Optical propagation; Phased arrays; Scheduling algorithm; Space technology; Standardization;
Journal_Title :
Communications Magazine, IEEE
