Title :
ALOHA with Collision Resolution: Physical layer description and software defined radio implementation
Author :
Liu, Xin ; Kountouriotis, John ; Petropulu, Athina P. ; Dandekar, Kapil R.
Author_Institution :
Electr. & Comput. Eng. Dept., Drexel Univ., Philadelphia, PA, USA
Abstract :
A cross-layer scheme, namely ALOHA with Collision Resolution (ALOHA-CR), is proposed for high throughput wireless communications in a cellular scenario. Transmissions occur in a time-slotted ALOHA-type fashion but with an important difference: simultaneous transmissions of two users can be successful. The physical layer required to achieve this functionality is described and the statistical properties of the user delays are determined so that the probability of user separation is maximized. An implementation of ALOHA-CR on the Wireless Open Access Research Platform (WARP) testbed containing software defined radio nodes is discussed and experimental results are presented.
Keywords :
multi-access systems; protocols; software radio; cellular scenario; collision resolution; high throughput wireless communication; physical layer description; software defined radio implementation; time slotted ALOHA; wireless open access research platform; Bandwidth; Delay; Diversity reception; Frequency diversity; Physical layer; Software radio; Software testing; System testing; Throughput; Wireless networks; MIMO systems; blind source separation; collision resolution; multi-user system; software defined radio;
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2010.5496007
