OFDM-IDMA Uplink Multi-user System with Scalable Latency for Next Generation WLAN

Compared to OFDM-CDMA, the OFDM-IDMA method has several advantages, including a lower ISI and more efficient cross-cell interference mitigation. Furthermore, IDMA supports a turbo-type iterative MUD algorithm that is easy to use and efficient for systems with a high user count. This gives us a high throughput system. In this paper, we examine how variations in SNR during wireless communication affect bit error rate (BER) in a combined IDMA-OFDMA framework. By using IDMA for iterative discovery, the cyclic prefixing approach in OFDM can minimize ISI. Flexible rate adaptation, frequency diversity, low-cost iterative multi-user detection, and notable improvements in spectrum and power efficiency are all advantages of OFDM-IDMA.