Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Joao Cal-Braz"'
Publikováno v:
Journal of Communication and Information Systems. 35:133-137
Publikováno v:
EuCNC/6G Summit
This article presents an Index modulated MIMO-GFDM system. In addition to the diversity/multiplexing gains and appealing spectral characteristics typical of MIMO-GFDM systems, the use of index modulation (IM) applied to the subcarriers within a GFDM
Publikováno v:
Anais de XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Autor:
Joao Cal-Braz, Rodrigo Pereira David
Publikováno v:
ICASSP
The nonlinear nature of the quantization operation performed by the ADCs imposes great challenges to the systems employing coarse quantization. Systems operating in moderate to high SNR regimes experience a pronounced capacity loss and also impairmen
Publikováno v:
Anais de XXXVII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Publikováno v:
ISWCS
This work focuses on precoded multiuser MIMO systems with index modulated signal vectors. That means that only certain positions in the signal vectors transmitted to the users contain information symbols (Information Bearing Positions- Ibp)and the pa
Autor:
Joao Cal-Braz, Raimundo Sampaio-Neto
Publikováno v:
IEEE Communications Letters. 18:949-952
This letter presents a sphere decoding strategy for generalized spatial modulation (GSM) systems. The proposed modifications reduce the exhaustive tree search for lattice points and exploits the structure of GSM, restraining the tree branches to thos
Autor:
Raimundo Sampaio-Neto, Joao Cal-Braz
Publikováno v:
IEEE Communications Letters. 18:953-956
This letter presents a new detection scheme for the generalized spatial modulation MIMO system. The strategy is based on the successive use of maximum likelihood detectors, applied in a nested fashion, to variable-length partitions of the post-equali
Autor:
Raimundo Sampaio-Neto, Joao Cal-Braz
Publikováno v:
ISWCS
Space-time block coding (STBC) can increase the diversity order of spatial modulation MIMO systems. Current deployments consider the use of the optimal detector, which benefits from the decoupled ML detection typical of STBC systems. However, its ada