multicarrier DS CDMA systems
Zero Forcing and Minimum Mean Square Error Multiuser Detection in Generalized Multicarrier DS CDMA Systems for Cognitive Radio
... is also required to be updated correspondingly. In this sce- nario, the proposed SZF-MUD having the processing matri- ces in (22) will have a higher complexity than the single-user MF receiver. Furthermore, when ...
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Differential space time modulation schemes for smart antenna aided generalized multicarrier DS CDMA systems
... MC DS-CDMA systems operating in fast fading chan- ...MC DS-CDMA using TF-domain spreading has been investigated and a novel user-grouping technique based on the interference ...
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Multiuser Decorrelating Based Long Range Frequency Domain Channel Transfer Function Prediction in Multicarrier DS CDMA Systems
... On the other hand, in future wireless systems, the carrier frequency is likely to be high, which results in normalized high Doppler frequen- cies. Thus, using the outdated channel transfer function (CTF) esti- ...
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Blind Soft Detection Assisted Frequency Hopping Multicarrier DS CDMA Systems
... 3, for the SFH/MC DS-CDMA system using a constant-weight code CQ; 2v; U in order to activate the subcarriers and using a receiver without the explicit knowledge of the FH pattern - exce[r] ...
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Joint Impact of Frequency Synchronization Errors and Intermodulation Distortion on the Performance of Multicarrier DS-CDMA Systems
... The paper is structured as follows. In Section 2, we introduce an MC-DS-CDMA system model where lin- ear signal processing operations (either in the time do- main or in the frequency domain) are simply ...
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Timing Free Blind Multiuser Detection for Multicarrier DS/CDMA Systems with Multiple Antennae
... sequence CDMA (DS-CDMA)— and in particular its resistance to multipath e ff ects induced by the radio channel as the communication rate grows larger and larger [1]—while relaxing some very demand- ing ...
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Performance Comparison of FH/MC DS CDMA with Single and Multi Carrier DS CDMA
... The multiple-access scheme is constituted by frequency-hopping FH based multicarrier DS-CDMA FWMC DS-CDMA, where the entire bandwidth of future systems can be divided into a number of su[r] ...
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Software Defined Radio Assisted Adaptive Broadband Frequency Hopping Multicarrier DS CDMA
... Above we have summarized the philosophy of a number of ART schemes, which can be employed in adaptive FH/MC DS-CDMA-based wireless communication systems. An S-ART scheme requires a certain level of ...
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Coherent and Differential Downlink Space Time Steering Aided Generalised Multicarrier DS CDMA
... DSTM systems significantly degrades in the presence of even rela- tively mild Interference and breaks down completely, when strong interference is inflicted ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... unified multicarrier DS-CDMA (MC DS-CDMA) schemes is defined and its performance is considered over multipath Nakagami- m fading ...MC DS-CDMA scheme is a variable, ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... hopping multicarrier direct-sequence code division multiple access (SFH/MC DS-CDMA) is proposed and inves- tigated, which can be rendered compatible with the existing second-generation narrowband ...
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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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Blind Joint Soft Detection Assisted Slow Frequency Hopping Multicarrier DS CDMA
... FH/MC DS-CDMA systems, the subbands are not required to be of equal ...third-generation CDMA systems can be supported using one or more subcarriers, consequently simplifying the ...
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Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... SC DS-CDMA or broadband MC-CDMA to achieve the best pos- sible BER performance, both require high-com- plexity ...SC DS- ■ Table ...SC DS-CDMA, MC-CDMA and conventional ...
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A Multicarrier DS CDMA System Using Both Time Domain and Frequency Domain Spreading
... MC DS-CDMA systems are ...multiple-access systems [3] are expected to have a bandwidth on the order of tens or even hundreds of ...based DS-CDMA or MC-CDMA using solely ...
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Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... generalized multicarrier direct sequence code-division multiple-access (MC DS-CDMA) schemes is defined and its performance is considered over multipath Nakagami- fading ...MC DS-CDMA is ...
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Design and Performance Analysis of an Adaptive Receiver for Multicarrier DS CDMA
... MC systems based on the single user detection (SUD) strategy, see [4, 14, 15], for example, where the MAI is simply treated as thermal ...MC-CDMA systems, where interest in this area has been mainly ...
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Generalized Multicarrier DS CDMA Using Various Chip Waveforms
... MC DS-CDMA systems using the rectangular, half-sine or raised-cosine chip waveform achieved a similar BER performance, when communicating over channels having arbitrary Nakagami fad- ing ...
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Performance of the Smart Antenna Aided Multicarrier DS CDMA and its Uplink
... (MC DS-CDMA), which constitutes an attractive scheme [1],[2],[3],[4], based on a combination of DS-CDMA and ...multitone DS-CDMA system pro- posed in [3] and the orthogonal MC ...
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Performance of Generalized Multicarrier DS CDMA Using Various Chip Waveforms
... In this letter, we extend our investigations presented in [1] by considering two additional chip waveforms, namely, the time- domain half-sine and raised-cosine chip waveforms, in addition to the rectangular chip ...
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