space-time spreading
Differential Space Time Spreading using Four Transmit Antennas and Iteratively Detected Sphere Packing Modulation
... coded Space-Time Spreading (DSTS) scheme using four trans- mit antennas that can be readily combined with PSK, QAM, as well as Sphere Packing (SP) modulation ...
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Adaptive Differential Space Time Spreading Assisted Turbo Detected Sphere Packing Modulation
... differential space-time spreading assisted turbo detected sphere packing mod- ulation scheme is proposed for improving the achievable through- put of code division multiple access (CDMA) ...variable ...
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A CM based equalizer for space-time spreading over channels with inter-Symbol interference
... named Space-Time Block Coding (STBC), was derived which maximizes the level of diversity obtained in flat fading ...as space-time spreading (STS) was derived in [4] for the downlink of ...
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Iteratively Decoded Irregular Variable Length Coding and Sphere Packing Modulation Aided Differential Space Time Spreading
... Differential Space-Time Spreading (DSTS) aided multidimen- sional Sphere Packing (SP) modulation designed for near-capacity joint source and channel ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami Fading Channels
... the time-varying char- acteristics of the ...the time-varying effects of wireless channels is em- ploying ...years, space-time coding has re- ceived much attention as an effective transmit ...
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Adaptive Space Time Spreading Assisted Wideband CDMA Systems Communicating over Dispersive Nakagami m Fading Channels
... the time-varying char- acteristics of the ...the time-varying effects of wireless channels is em- ploying ...years, space-time coding has re- ceived much attention as an effective transmit ...
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Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... frequency, time and spatial ...the space-time transmitter processing scheme considered is based on the prin- ciples of Steered Space-Time Spreading ...employs time and ...
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Performance of Broadband Multicarrier DS CDMA using Space Time Spreading Assisted Transmit Diversity
... using space–time spreading (STS)-assisted transmit diversity is investigated in the context of broadband communications over frequency-selective Rayleigh-fading ...employing time (T)-domain ...
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Downlink Steered Space Time Spreading Assisted Generalised Multicarrier DS CDMA Using Sphere Packing Aided Multilevel Coding
... employing Space-Time Block Codes (STBC) [2], which was capable of achieving a substantial diversity ...as Space-Time Spreading (STS) for the downlink of Wideband Code Division Multiple ...
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A Space Time Spreading Assisted Multicarrier DS CDMA System using OVSF Codes Employing Adaptive Mode Switching Thresholds and Adaptive Modulation
... The Concept of Space-Time Spreading (STS) assisted, Adap- tive Quadrature Amplitude Modulation (AQAM) aided MC DS-CDMA is introduced. The AQAM mode-switching thres- holds are determined using an ...
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Downlink Space–Time Spreading Using Interference Rejection Codes
... code-based space–time spreading (STS) scheme in comparison to that of classic Walsh code and pseudonoise code-based STS when communicating over dispersive Nakagami- m multipath ...
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Performance of Wideband CDMA Using Space Time Spreading over Multipath Nakagami Fading Channels
... the space-time spreading based transmit diversity scheme and the conventional RAKE receiver arrangement using only one transmission antenna when com- municating over the flat-fading (for ...
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Differential Detection of Space Time Spreading with Two Transmit Antennas
... A differential detection scheme for space-time spreading with two transmit antennas is proposed. The scheme does not require channel state information at either the transmitter or the receiver. With ...
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Antenna Selection and Space-Time Spreading Methods for Multiple-Antenna Systems
... random spreading model: the chips are randomly chosen to be ...linear space-time spreading ...and spreading sequences, that maximize the spectral ...optimal space-time ...
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Differential Space Time Spreading using Iteratively Detected Sphere Packing Modulation and Two Transmit Antennas
... employing space-time coding aided transmit diversity invoking multiple antennas ...meritorious space-time modulation schemes has attracted considerable research attention [5, ...of ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... We feel particularly indebted to Denise Harvey for her skilful assistance in correcting the final manuscript in LaTeX. Without the kind support of Mark Hammond, Sarah Hinton, Z¨oe Pinnock and their colleagues at the ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... same time, for any given service, the FH/MC DS-CDMA system may also invoke a range of adaptation schemes, in order to achieve the highest possible spectrum efficiency in various propagation environments, such as ...
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Performance of the Smart Antenna Aided Generalized Multicarrier DS CDMA Downlink using both Time Domain Spreading and Steered Space Time Spreading
... PERFORMANCE RESULTS In this section the BER performance of the downlink of a generalized MC DS-CDMA system employing SSTS and using 32-chip Walsh codes as T-domain spreading sequences as[r] ...
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Broadband MC DS CDMA Using Space Time and Frequency Domain Spreading
... Recently a considerable number of studies has been conducted in the context of the future wireless communication systems. Broad- band multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) constitutes ...
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Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems
... both spreading in time and fre- quency domains to develop a scheme that has the potential of maximizing the achievable diversity in a multi-rate, multiple-access ...joint time-frequency 2-dimen- ...
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