Results 21 to 30 of about 4,812 (181)
Journal of Sensors, Volume 2020, Issue 1, 2020., 2020 At present, precision agriculture and smart agriculture are the hot topics, which are based on the efficient data collection by using wireless sensor networks (WSNs). However, agricultural WSNs are still facing many challenges such as multitasks, data quality, and latency.
Xiaomin Li +4 more
wiley +1 more source
EURASIP Journal on Wireless Communications and Networking, 2004 Multiple-access interference and interfinger interference limit the capacity of conventional single-carrier DS-CDMA systems. Even though multicarrier CDMA posses the advantages of conventional CDMA and OFDM, it suffers from two major implementation ...
Madhukumar A. S. +3 more
doaj +2 more sources
A Review of Underwater Localization Techniques, Algorithms, and Challenges
Journal of Sensors, Volume 2020, Issue 1, 2020., 2020 Recently, there has been increasing interest in the field of underwater wireless sensor networks (UWSNs), which is a basic source for the exploration of the ocean environment. A range of military and civilian applications is anticipated to assist UWSN. The UWSN is being developed by the extensive wireless sensor network (WSN) applications and wireless ...
Xin Su +4 more
wiley +1 more source
Advances in Condensed Matter Physics, Volume 2020, Issue 1, 2020., 2020 With the development trend of wireless and broadband in the communication link and even the whole information industry, the demand of high‐frequency microwave bandwidth has been increasing. The RoF network system solves the problem of spectrum congestion in low‐frequency band by providing an effective technology for the distribution of high‐frequency ...
Jiangnan Xiao +7 more
wiley +1 more source
Statistical Modeling of Bit-Error-Rates in Asynchronous Multicarrier CDMA and Direct-Sequence CDMA Systems [PDF]
, 2004 This paper presents a method for modeling the bit-error-rate (BER) probability density functions (pdf) of asynchronous Multicarrier Code Division Multiple Access (MC-CDMA) and Direct-Sequence Code Division Multiple Access (DS-CDMA) systems.
Carey, Daniel +2 more
core +2 more sources
Multi-code Multicarrier CDMA: Performance Analysis
Journal of Communications Software and Systems, 2004 A new multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in afrequency selective fading channel. By allowing each user to transmit an M-ary code sequence, the proposed MC-MC-CDMA system can support various data rates as required by next generation standards without increasing the interference which is ...
Kim, Taeyoon +3 more
openaire +4 more sources
Design and Implementation of MC-CDMA Technique Using FPGA [PDF]
Engineering and Technology Journal, 2013 Multicarrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed wireless data transmission; it's a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA).
il A. H. Hadi, Layla Hattim Abood
doaj +1 more source
Wireless Communications and Mobile Computing, Volume 2020, Issue 1, 2020., 2020 5G mobile communications offer several benefits, which include providing extremely low latency, very high data rates, significant improvement in the number of users, and increase in base station capacity and perceived quality of service. This may be achieved at the cost of an increased receiver complexity by nonorthogonal access of users. Nonorthogonal
Muhammad Hussain +2 more
wiley +1 more source
Robust or nonrobust: On MC-DS-CDMA acquisition in LEO satellite communications
Digital Communications and Networks, 2023 Low Earth Orbit (LEO) satellite communications can provide global coverage in the sixth generation communication (6G) networks. To combat the strong Partial Band Interferences (PBIs) and multipath fading in LEO satellite communication systems, the ...
Entong Meng +4 more
doaj +1 more source
IEEE Access, 2020 Sidelobe raising, caused by multipath and multiple-access interference (MAI), hinders the signal detection and time-delay estimation of multicarrier code-division multiple-access (MC-CDMA) signals, which are crucial for localization and tracking ...
Yuyao Shen, Ying Xu
doaj +1 more source