2024-03-28T10:38:18Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00005618
2023-01-16T03:50:22Z
320:321:322
Application of Successive Interference Cancellation to a Packet-Recognition/Code-Acquisition Scheme in CDMA Unslotted ALOHA Systems
Tadokoro, Yukihiro
Okada, Hiraku
Yamazato, Takaya
Katayama, Masaaki
open access
Copyright 2005 IEICE 許諾番号 06RB0162号
CDMA Unslotted ALOHA
successive interference cancellation
throughput
packet recognition
code acquisition
Packet-recognition/code-acquisition(PR/CA)is one of the most important issues in packet communication systems. In a CDMA Unslotted ALOHA system, Multiple Access Interference(MAI)may bring about errors in PR/CA. The MAI mainly stems from already recognized packets and newly arriving packets under the execution of PR/CA. This characteristic of asynchronous transmission in CDMA U-ALOHA systems implies that only one or a few packets arrive at the receiver within a short interval of a execution. Furthermore, newly arriving packets are recognized and code-acquired by using a short preamble part. Consequently, the MAI from the packets under the execution of the PR/CA will be small.Focusing on that point, this paper proposes applying the IC scheme in order to suppress the MAI from the already recognized and code-acquired packets.A performance evaluation demonstrates that such an application is valid due to the small amount of MAI from the packets under the execution of PR/CA. In addition,we demonstrates that the scheme reduces false recognition rather than mis-recognition. Such a scheme improves the performance of not only PR/CA, but also the throughput.
IEICE
2005-06
eng
journal article
VoR
http://hdl.handle.net/2237/7224
https://nagoya.repo.nii.ac.jp/records/5618
http://search.ieice.org/bin/summary.php?id=e88-a_6_1605&category=A&year=2005&lang=E&abst=&auth=1
0916-8508
IEICE Transactions on Fundamentals
E88-A
6
1605
1612
https://nagoya.repo.nii.ac.jp/record/5618/files/E88-A-1605.pdf
application/pdf
1.0 MB
2018-02-19