Abstract:
OMA (Orthogonal Multiple Access) doesn’t meet the 5th Generation requirements, because its
performance is not good when number of users are increases. Non Orthogonal Multiple Access
(NOMA) improves spectral efficiency and user capacity without sacrificing system performance.
The main contribution of this thesis is to evaluate performance analysis, based on BER curve of
CD-NOMA and PD NOMA using different parameters. The chosen schemes for Code Domain
NOMA are LDS-CDMA, LDS-OFDM and SCMA. Power Domain NOMA is implemented for
two user model. CD NOMA schemes are compared with PD NOMA and there fair comparison is
evaluated. All schemes are run in MATLAB under AWGN Channel. There system model, key
performance parameters and achieved results are discussed. This thesis primarily discusses the
importance and uniqueness of NOMA techniques. In Research Methodology Phase-2, SCMA
scheme is discussed in detail. It provide fundamental for understanding of SCMA scheme under
different conditions. This thesis aims to demonstrate SCMA scheme performance in terms of bit
error rate using different codebooks and orthogonal resources. Using Non AWGN and AWGN
channel different codebooks performance is evaluated. From results we achieved good results for
Codebook2. We achieved better results for codebooks when orthogonal resources are equal to
code words.
