Using queue statistics in beamforming for ALOHA

Author

Naware, Kdyut ; Tong, Lang

Author_Institution

Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA

Volume

1

fYear

2003

fDate

9-12 Nov. 2003

Firstpage

212

Abstract

We address the problem of receiver design for the uplink of a WLAN network from a stability viewpoint. We propose a cross layer approach that incorporates the users´ buffer statistics for the design of smart antennas employed by the base station/access point. In particular, we consider slotted ALOHA as the MAC protocol and we propose a linear MMSE front-end that utilizes the probability of a users´ queue being empty in its design. We compare the performance of the proposed MMSE front-end with the best adaptive front-end for the two user case and show that under certain conditions the proposed front-end is close to optimal.

Keywords

access protocols; adaptive antenna arrays; least mean squares methods; multi-access systems; queueing theory; radio receivers; stability; statistics; wireless LAN; ALOHA; beamforming; buffer statistics; matched filters; media access control protocol; minimum mean square error; multiple access system; queue statistics; radio receiver design; smart antennas; stability; wireless local area network; Array signal processing; Contracts; Cross layer design; Interference; Media Access Protocol; Physical layer; Receiving antennas; Stability; Statistics; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on

Print_ISBN

0-7803-8104-1

Type

conf

DOI

10.1109/ACSSC.2003.1291899

Filename

1291899