The efficiency of the CORDIC Operator in the MIMO MC-CDMA receiver

Abstract

In recent years, there is an increased requirement including transfers rapidity of information, due to the widespread use of multimedia applications on wireless communication system. The MIMO technology offers a promising solution for increasing spectral efficiency and transmitting data across a multi-antenna transmission and reception network. The goal of this study is to improve the data processing time, which poses a big problem of digital communication. In this article, a solution is proposed to improve this problem. The adopted approach shows that the use of the CORDIC algorithm to calculate the cosine and sine of the DFT / IDFT is very efficient and that the use of the fixed point gives a remarkable speed while maintaining a better accuracy. In addition, the use of a powerful fixed-point processor dedicated to signal processing could also have given better results than other results obtained in the literature. The results obtained conclude that the use of the CORDIC algorithm on a fixed point is faster compared to receiver without the CORDIC algorithm.

A Miniaturized CSRR Loaded 2-Element MIMO Antenna for LTE Band

“…Further, after incorporating MIMO, the channel capacity and can be increased [17]. Importantly, the MIMO technology plays a significant role in spectral efficiency improvement and data transmission in multi-antenna network [18].…”

A Dual Frequency Compensation Technique to Improve Stability and Transient Response for a Three Stage Low-Drop-Out Linear Regulator

“…Many system-on-a-chip (SoC) applications integrate circuit blocks, such as digital, analog and radio-frequency blocks [1][2][3][4]. Charge pump regulators are commonly used to generate high voltages for lighting or memory units [5,6]; switching converters are employed to regulate digital blocks, due to their high power efficiency [7,8]; and low-drop-out linear voltage regulators are used to provide low noise supply voltage with very low ripple for noise sensitive blocks, such as analog/RF circuits [9,10].…”

“…Value obtained in load transient regulation, 3 Simulated value obtained at VI=1.6 V for IL step-up variation from 150 mA to 0 mA with 1 µs of rise time, 4 Simulated value obtained at VI=1.6 V for IL step-down variation from 0 mA to 150 mA with 1 µs of fall time, 5 Values obtained with ideal voltage reference, 6 Values obtained with internal voltage reference, 7 Value obtained with internal voltage reference and calculated by using Eq. (32)…”