Results 81 to 90 of about 70,898 (211)

Layered Steered Space–Time-Spreading-Aided Generalized MC DS-CDMA

open access: yes, 2010
—We present a novel trifunctional multiple-input– multiple-output (MIMO) scheme that intrinsically amalgamates space–time spreading (STS) to achieve a diversity gain and a Vertical Bell Labs layered space–time (V-BLAST) scheme to attain a multiplexing ...
Alamri, Osamah   +3 more
core   +1 more source

ANALISIS PREFERENSI PILIHAN KONSUMEN TERHADAP KARTU CDMA PRABAYAR

open access: yesJ@ti Undip: Jurnal Teknik Industri, 2012
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

Multi-code Multicarrier CDMA: Performance Analysis

open access: yesJournal of Communications Software and Systems, 2006
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
doaj  

Loosely synchronized spreading code aided network performance of quasi-synchronous UTRA-like TDD/CDMA systems

open access: yes, 2005
In this paper we investigate the achievable capacity of a UTRA-like Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system employing Loosely Synchronized (LS) spreading codes. The family of operational CDMA systems is interference limited,
Hanzo, L., Hua, W., Ni, S.
core  

CDMA Transmission with Complex OFDM/OQAM

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
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

Generalized Multicarrier CDMA: Unification and Linear Equalization

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
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

Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection for DS-CDMA and SDMA Systems Employing I-Q Modulation

open access: yes, 2010
The so-called receiver multiuser diversity aided multistage minimum mean-square error multiuser detector (RMD/MS-MMSE MUD), which was proposed previously by the author, is investigated in the context of the direct-sequence code-division multiple-access ...
Yang, Lie-Liang
core   +1 more source

UNJUK KERJA PENYAMA TURBO PADA SISTEM CODE DIVISION MULTIPLE ACCESS (CDMA)

open access: yesTechne, 2012
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  

Adaptive Space-Time-Spreading-Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami-m Fading Channels

open access: yes, 2005
In this contribution, the performance of wideband code-division multiple-access (W-CDMA) systems using space-timespreading-(STS-) based transmit diversity is investigated, when frequency-selective Nakagami-m fading channels, multiuser interference, and ...
Hanzo, L., Yang, L-L.
core  

CDMA Wireless Communication System of Coal Mine Based on the Telecom Public Network

open access: yesGong-kuang zidonghua, 2011
The paper introduced a mine-used CDMA wireless communication system based on the Telecom Public Network. The system introduces the Telecom Public Network CDMA signals into coal mine underground and makes integration of the Telecom Public Network CDMA ...
GU Yi-dong
doaj  

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