Results 51 to 60 of about 36,530 (229)
The Alamouti Scheme with CDMA-OFDM/OQAM
This paper deals with the combination of OFDM/OQAM with the Alamouti scheme. After a brief presentation of the OFDM/OQAM modulation scheme, we introduce the fact that the well-known Alamouti decoding scheme cannot be simply applied to this modulation ...
Pierre Siohan +2 more
doaj +1 more source
ANALISIS PREFERENSI PILIHAN KONSUMEN TERHADAP KARTU CDMA PRABAYAR
Kartu CDMA Prabayar merupakan alternatif lain bagi pengguna telpon seluler, setelah GSM. Penelitian ini ditujukan untuk mengetahui preferensi konsumen pemakai kartu CDMA Prabayar dan mengidentifikasi prioritas faktor pilihan konsumen dalam memilih kartu ...
Uyuunul Mauidzoh
doaj +1 more source
Physical Layer Built-In Security Analysis and Enhancement Algorithms for CDMA Systems
Historically developed for secure communication and military use, CDMA has been identified as a major modulation and multiple-access technique for 3G systems and beyond.
Li Tongtong, Ling Qi, Ren Jian
doaj +2 more sources
Carrier Sense Random Packet CDMA Protocol in Dual-Channel Networks [PDF]
Code resource wastage is caused by the reason that many hopping frequency (FH) sequences are unused, which occurs under the condition that the number of the actual subnets needed for the tactical network is far smaller than the networking capacity of ...
C. Du +5 more
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CDMA Transmission with Complex OFDM/OQAM
We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Chrislin Lélé +3 more
doaj +1 more source
Multi-code Multicarrier CDMA: Performance Analysis
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 ...
Taeyoon Kim +3 more
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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
Performance of Turbo Interference Cancellation Receivers in Space-Time Block Coded DS-CDMA Systems [PDF]
Derrick Bonginkosi Mashwama +1 more
openalex +1 more source
Generalized Multicarrier CDMA: Unification and Linear Equalization
Relying on block-symbol spreading and judicious design of user codes, this paper builds on the generalized multicarrier (GMC) quasisynchronous CDMA system that is capable of multiuser interference (MUI) elimination and intersymbol interference (ISI ...
Wang Zhengdao +2 more
doaj +1 more source
UNJUK KERJA PENYAMA TURBO PADA SISTEM CODE DIVISION MULTIPLE ACCESS (CDMA)
Penelitian ini bertujuan mengetahui unjuk kerja penyama turbo pada sistem Code Division Multiple Access (CDMA) dalam mengurangi BER akibat pengaruh interferensi.
Eva Yovita Dwi Utami
doaj

