Results 91 to 100 of about 122,557 (242)

HUBUNGAN KUALITAS PRODUK KARTU CDMA FLEXI DENGAN LOYALITAS MEREK PADA KONSUMEN [PDF]

, 2007
PT Telkom Indonesia Tbk utilizing CDMA fixed wireless phone labeled as Flexi. CDMA 2000-1x is a platform technology Flexi is a system that uses spread spectrum techniques (spread spectrum) with unique codes randomly, so immune to interference ...
Anggada, Teuku
core  

Interference Mitigation in B5G Network Architecture for MIMO and CDMA: State of the Art, Issues, and Future Research Directions

Information
The emergence of Beyond 5G (B5G) networks introduces novel challenges related to interference management, particularly within the context of Multiple-Input, Multiple-Output (MIMO) and Code Division Multiple Access (CDMA) technologies.
Haoxuan Yang, Faizan Qamar, Syed Hussain Ali Kazmi, Syed Talib Abbas Jafri, Khairul Akram Zainol Ariffin, Quang Ngoc Nguyen   +5 more
doaj   +1 more source

Single Carrier Cyclic Prefix-Assisted CDMA System with Frequency Domain Equalization for High Data Rate Transmission

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., Chin Francois, Liang Ying-Chang, Yang Kai   +3 more
doaj   +1 more source

Broadband MC DS-CDMA Using Space-Time and Frequency-Domain Spreading

, 2002
In this contribution multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) using space-time spreading (STS) assisted transmit diversity and frequency-domain (F-domain) spreading is investigated in the context of broadband communications
Yang, L-L., Hanzo, L.
core  

Exact BER Performance of Asynchronous MC-DS-CDMA over Fading Channels

, 2010
In this contribution an accurate average Bit Error Rate (BER) formula is derived for MC-DS-CDMA in the context of asynchronous transmissions and random spreading sequences. We consider a flat Nakagami-m fading channel for each subcarrier. Our analysis is
Affes, Sofiene, Hanzo, Lajos, Smida, Besma   +2 more
core  

Uplink capacity analysis of two-hop-relay CDMA cellular systems

Tongxin xuebao, 2010
Based on the two-hop-relay CDMA cellular systems,two kinds of out-of-band relaying methods were pro-posed to improve the conventional CDMA cellular systems.Then by analyzing the interference power of the non-relaying CDMA cellular systems,the overall ...
LU Wei-feng1, WU Meng2
doaj   +2 more sources

Multi-User Detection for Group Orthogonal Multi-Carrier Code Division Multiple Access System in Frequency Selective Rayleigh Fading Channel

Journal of Engineering and Sustainable Development, 2008
Code Division Multiple Access (CDMA) suffers from multi-user interference (MUI), and intersymbol interference (ISI) under frequency selective multi-path fading channels. Orthogonal Frequency Division Multiple access (OFDM) is MUI free but achieves lower
Maha George Zia, Harith Akram Nassir
doaj  

Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design

EURASIP Journal on Advances in Signal Processing, 2002
Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of channel identification and signal combining/
Li Hongbin, Sun Wei
doaj   +1 more source

Optimum Asymptotic Multiuser Efficiency of Pseudo-Orthogonal Randomly Spread CDMA

, 2006
A $K$-user pseudo-orthogonal (PO) randomly spread CDMA system, equivalent to transmission over a subset of $K'\leq K$ single-user Gaussian channels, is introduced.
Kanter, Ido, Shental, Ori
core   +2 more sources

Improved Frequency Sweep Keying CDMA Using Faster R-CNN for Extended Ultrasonic Crosstalk Reduction. [PDF]

Sensors (Basel), 2023
Park GR, Park SH, Baek KR.
europepmc   +1 more source