Abstract
The 5 G wireless offers many advancements over the prevalent 4 G LTE communication networks, such as enhanced data transmission rates (in order of Gbps), Substantially reduced latency, many times increase in the Base Station Capacity and praiseworthy betterments in the QoS offered to the users. IDMA has already proven its potential in 5 G and it can be easily integrated in to massive MIMO systems. The ideology behind the concept of Massive MIMO is to match the requirement for efficient usage of spectrum, and is implemented using several numbers of antennas at the Base Station, catering to a number of subscribers concurrently using same band of the given frequency. However, the cost and complexity of implementation of such large-scale antenna systems is quite high. Thus for reduction in the number of radio frequency chains, the technique of Transmit Antenna Selection is used. In this paper, we propose two transmit antenna selection strategies considered for individual user or overall users based on selection criteria maximum sum rate or minimum bit error performance considering for (MIMO) multiuser multiple input and multiple output single carrier frequency division multiple access based interleave division multiple access wireless system (MIMO-SCFDMA-IDMA). We have taken this scheme for the uplink communication and selection of the subcarrier is through the bulk selection. The performance may get degraded in case of heavy load of multiple subcarriers attached to one antenna, which will in turn call for the role of power amplifier and thus efficiency of the system may go down. Therefore, here we prefer bulk subcarrier selection instead of per subcarrier selection. It is shown in this paper that enhanced sum rate can be achieved as more users are allowed to transmit concurrently, and thus multiuser gain is achieved. We also demonstrated the comparison with simulation result of sum rate performance and Bit error rate performance of varying users. Result shows that antenna selection based on overall system is better than the antenna selection considering each user.
Highlights
Multiple input multiple output (MIMO) systems are necessary part of various wireless standards such as 4G, WiMax, 802.11n, HSPA+.MIMO is that the technique to transfer the information independently from over one antenna at the same time, and at receiver end information is received by one or more antenna, without additional bandwidth or transmit power, better performance and higher data rates can be obtained in MIMO system, but the eminent problem of MIMO systems arises due to the increase in complexness and cost induced by RF chain [1]
The bit error rate and sum rate performance of the antenna selection technique is presented for the MIMO-SC-FDMA-IDMA system
From the presented simulation results, it can be observed that the antenna selection strategy considering overall users, provides better sum rate and bit error (BER) performance
Summary
Multiple input multiple output (MIMO) systems are necessary part of various wireless standards such as 4G, WiMax, 802.11n, HSPA+.MIMO is that the technique to transfer the information independently from over one antenna at the same time, and at receiver end information is received by one or more antenna, without additional bandwidth or transmit power, better performance and higher data rates can be obtained in MIMO system, but the eminent problem of MIMO systems arises due to the increase in complexness and cost induced by RF chain [1]. Transmit Antenna Selection Strategies for SC- FDMA- IDMA Massive MIMO Systems the assistance of de-interleaver [14]. The interleaver based multiple-access scheme [13] has been studied for high spectral efficiency, improved performance and low receiver complexity. For efficient communication there's demand of high spectral efficiency i.e. high data rate and low fading MIMO-SC-FDMA scheme with IDMA has been employed in the system. As there are M transmitting antennas and correspondingly, N receiving antennas, the diversity is achieved of the order M*N, and as the diversity order increases it gives better bit error performance. Transmit antenna selection is applied to MIMO SC-FDMA-IDMA system through bulk selection (choosing same antennas for all subcarriers), for improving the bit error (BER) and sum-rate performance of the system presented in this paper.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
