Nonorthogonal CSK/SS ALOHA System under MANET Environment

다국어 초록 (Multilingual Abstract)

Spread ALOHA systems that combine the spread spectrum techniques with the ALOHA system (a simple random access protocol without carrier sensing function) have been investigated as Mobile Ad-hoc Network (MANET) protocols. This paper presents the effect of the nonorthogonal Code Shift Keying Spread Spectrum (CSK/SS) ALOHA system on improving the throughput and delay performances of the spread ALOHA system under the MANET environment. The nonorthogonal CSK/SS system, which uses systematically-constructed nonorthogonal sequences, is one of the multilevel modulation systems for the spread spectrum technique with increasing the number of bits per frame. Optimum parameters can be used to obtain the best system performance; thus, this paper gives analytical expressions of the data transmission efficiency and delay property of the proposed scheme as a function of the system parameters under the assumption of no power control. Numerical results show that the nonorthogonal CSK/SS ALOHA system is useful in the MANET environment, compared with the conventional spread ALOHA systems.

참고문헌 (Reference)

1 L. Femila, "Throughput enrichment and drooping off power ingestion in ad hoc networks by EE-MAC protocol" 109 (109): 813-822, 2019

2 N. Komuro, "Throughput analysis of the nonorthogonal CSK/SS random access system on communication between users" 162-166, 2009

3 J. Wu, "Reinforcement learning based mobility adaptive routing for vehicular ad-hoc networks" 101 (101): 2143-2171, 2018

4 N. Komuro, "Nonorthogonal CSK/CDMA with received-power adaptive access control scheme" E91-A (E91-A): 2779-2786, 2008

5 N. Komuro, "Intensity modulation direct detection optical wireless communication with nonorthogonal code shift keying" 723-726, 2019

6 N. Komuro, "Influence of channel estimation error on throughput performance in the channel estimation-oriented access control scheme with code shift keying" 1-5, 2006

7 K. Kobayashi, "Improving performance of DS/SS-IVC scheme based on location oriented PN code allocation" E99-A (E99-A): 225-234, 2016

8 A. Verma, "Evaluation of network intrusion detection systems for RPL based 6LoWPAN networks in IoT" 108 (108): 1571-1594, 2019

9 A. Mengali, "Enhancing the physical layer of contention resolution diversity slotted ALOHA" 65 (65): 4295-4308, 2017

10 N. Komuro, "CSK/SSMA ALOHA system with nonorthogonal sequences" E87-A (E87-A): 2564-2570, 2004

11 N. Komuro, "A reasonable throughput analysis of the CSK/SSMA unslotted ALOHA system with nonorthogonal sequences" E88-A (E88-A): 1462-1468, 2005

12 M. Jia, "A novel spread slotted ALOHA based on cognitive radio for satellite communications system" 232 : 1-9, 2016