|
Title
|
|
|
|
Multiple access algorithms without feedback using combinatorial designs
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| A new class of multiple access algorithms for systems without feedback is introduced and analyzed. A finite population of users is assumed, where each user transmits a packet R times within the next N time slots (and all packets have an equal length of one slot). To improve the performance achieved by randomly selecting these R slots, user codes are invoked such that any two users will only transmit simultaneously in at most one slot, i.e., 2-(N, R, 1) designs. We argue that in most cases, the set of user codes can be generated easily using cyclic designs and provide a method to select T user codes from the set of user codes SN,R in case the user population consists of T < |SN,R| users. We further demonstrate how larger populations, with T > |SN,R|, can still benefit from these user codes in two different manners. Closed formulas that express the success probability of a packet are provided for all population setups. Finally, a comparison with the random selection strategy demonstrates the performance gain realized by the new multiple access algorithms and some engineering rules to optimize the performance are provided. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
IEEE transactions on communications. - New York, N.Y., 1972, currens
| |
|
Publication
|
|
|
|
New York, N.Y.
:
Institute of Electrical and Electronics Engineers
,
2009
| |
|
ISSN
|
|
|
|
0090-6778
[print]
1558-0857
[online]
| |
|
Volume/pages
|
|
|
|
57
:9
(2009)
, p. 2724-2733
| |
|
ISI
|
|
|
|
000269798600031
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|