Use of 1-bit digital-to-analogue converters in massive MIMO systems

作者：Guerreiro J^*; Dinis R; Montezuma P

来源：Electronics Letters, 2016, 52(9): 778-779.

DOI：10.1049/el.2015.4037

• digital-analogue conversion
• MIMO systems
• digital-to-analogue converters
• massive MIMO systems
• multiple-input multiple-output systems
• nonlinear distortion effects
• low-complexity maximum ratio transmission technique
• transmit antennas
• word length 1 bit

Massive multiple-input multiple-output (MIMO) systems are being proposed for next generation broadband wireless systems. However, as the complexity of implementation grows with the number of antenna elements, their feasibility is a challenging task. Consider very low complexity, 1-bit digital-to-analogue converters (DACs) for the downlink of massive MIMO systems. The impact of the resultant severe non-linear distortion effects is analysed when a low-complexity maximum ratio transmission technique is employed for user separation. The non-linear distortion levels decrease with the number of transmit antennas allowing good performance, even with 1-bit DACs are shown.

• 出版日期2016-4-28