• BURRE TEJASWINI
• D SRI RAMA MURTHY

Today’s wireless networks allocate radio resources to users based on the orthogonal multiple access (OMA) principle. However, as the number of users increases, OMA based approaches may not meet the stringent emerging requirements including very high spectral efficiency, very low latency and massive device connectivity. Non orthogonal multiple access (NOMA) principle emerges as a solution to improve the spectral efficiency while allowing some degree of multiple access interference at receivers. The latest member of the multiple access family, (NOMA) has been recently proposed for 3GPP (LTE) and envisioned to be an essential component of 5th generation (5G) mobile networks. The key feature of NOMA is to serve multiple users at the same time /frequency /code, but with different power levels, which yields a significant spectral efficiency gain over conventional orthogonal multiple access. In this paper we providing a unified model for NOMA including uplink and downlink transmissions along with the extensions to cooperative communication.

Cooperative NOMA, Outage Probability, successive interference cancellation, minimum mean square error.

"PERFORMANCE ANALYSIS OF COOPERATIVE NOMA IN 5G SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.186-193, May-2019, Available :http://www.jetir.org/papers/JETIR1905R27.pdf

"PERFORMANCE ANALYSIS OF COOPERATIVE NOMA IN 5G SYSTEMS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp186-193, May-2019, Available at : http://www.jetir.org/papers/JETIR1905R27.pdf