space-time DS-CDMA systems
Differential Space Time Block Code Modulation for DS CDMA Systems
... Note that besides the Rake type combination of the de- layed versions from each path, the D-Det receiver exploits the known information of the spreading sequences as well as their delayed paths deterministically. Hence ...
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Subspace Based Blind and Group Blind Space Time Multiuser Detection for the Generalized Multicarrier DS CDMA Uplink
... single-carrier DS-CDMA systems based on the philosophy of signal subspace estimation, which benefits from a lower compu- tational complexity and a better performance compared to the MOE based blind ...
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An Iterative Multiuser Detector for Turbo-Coded DS-CDMA Systems
... vanced CDMA systems with specific focus on system-level design of multiuser detectors for the channel coding (with emphasis on turbo and turbo-like codes), the uncoded CDMA systems, ...
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Pre-Decorrelation for Coded DS-CDMA System with Space-Time Block Coding
... Under severe channel conditions (i.e. multipath), the multiple access interference (MAI) becomes the major source of performance degradation for direct sequence CDMA (DS-CDMA) systems. This is ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... From June 1997 to December 1997, he was a Vis- iting Scientist at the Institute of Radio Engineering and Electronics, Academy of Sciences of the Czech Republic, Prague. Since December 1997, he has been with the ...
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Space Time Chip Equalization for Maximum Diversity Space Time Block Coded DS CDMA Downlink Transmission
... Information Systems Laboratory (ISL), Stanford Univer- sity, California, USA, working on OFDM-based powerline commu- ...Wireless Systems (WISE) group of DESICS as a ...cation systems, like third ...
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Differential space time modulation schemes for smart antenna aided generalized multicarrier DS CDMA systems
... In [9], a DSCM scheme was presented to suppress the in- terferences in flat fading channels by combining the merits of DSTM and spread spectrum techniques. It was shown that DSCM significantly outperforms DSTM in the ...
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Coherent and Differential Downlink Space Time Steering Aided Generalised Multicarrier DS CDMA
... Differential Space-Time Modulation (DSTM) schemes [14, 15], introduced as extensions of the traditional differential phase shift keying scheme, were shown to be capable of reliable data detection without ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... 3G systems, the beyond 3G mobile wireless communication systems are expected to employ at least the following three (but without any reason to limit them) typical ...wireless systems, which implies ...
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Buffer aided distributed space time coding schemes and algorithms for cooperative DS CDMA systems
... (DS-CDMA) systems. Specifically, in the proposed cooperative DS-CDMA sys- tems, a relay pair selection algorithm (exhaustive/greedy) that selects the optimum set of relays automatically ...
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Performance of Turbo Interference Cancellation Receivers in Space Time Block Coded DS CDMA Systems
... The presence of multiple access interference (MAI) in CDMA systems has led many researchers to investigate ways of exploiting the MAI to improve the system performance. The optimum multiuser detector (MUD) ...
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Broadband MC DS CDMA Using Space Time and Frequency Domain Spreading
... (MC DS-CDMA) constitutes one of the most promising multiple-access schemes and hence enjoyed wide ...MC DS- CDMA system using space-time spreading [1] assisted transmit di- ...
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Multiple Access Technologies for Beyond 3G Wireless Cellular Systems
... cellular systems are ...under time division, frequency-division, and code-division ...B3G systems in terms of high-data-rate transmission and burst data traffic network load, we conclude that none of ...
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Blind Reduced Rank MMSE Detector for DS CDMA Systems
... The major limitation on the performance and channel ca- pacity of direct-sequence (DS) code division multiple ac- cess (CDMA) system is the multiple-access interference (MAI) due to simultaneous ...
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Performance of Cellular DS CDMA Systems Using Distributed Antennas
... BER versus coordinates x, y performance of the distributed antenna cellular DS-CDMA system supporting single user, when the user signal experiences pass-loss, lognormal shadowing slow fa[r] ...
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Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems
... antennas, respectively. In our simulations, we compare our proposed scheme with 2D OFDM-CDMA described in [6]. The maximum number of users allowed in Fig- ures 8 and 9 are 16, and 32 users, respectively. Simula- ...
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Comparative Study of Different Space Time Coding Schemes for MC CDMA Systems
... of space-time trellis-code (STTC), space-time block code (STBC), and space-time trellis-code concatenated with space-time block code (STTC-STBC) for multi-carrier ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... MC DS-CDMA schemes in terms of m = 1, 2 and ∞ ...multitone DS-CDMA outperforms orthogonal MC ...MC DS-CDMA outperforms multitone ...MC DS-CDMA schemes are ...
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Accurate BER Analysis of Asynchronous DS CDMA Systems in Ricean Channels
... Therefore the accurate BER analysis dispensing with the previous assumptions on the MAI distribution is desirable. Hence a number of accurate techniques have been devel- oped, such as the series expansion [12], [13], ...
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Ant Colony Based Multiuser Detection for MC DS CDMA Systems
... MC DS-CDMA ...MC DS-CDMA system supporting K = 32 users with the aid of length-31 Gold codes used as the T-domain spreading ...MC DS-CDMA system considered is capable of ...
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