  In this paper, we present a new scenario of direction of arrival (DOA)
estimation using massive multiple-input multiple-output (MIMO) receive array
with low-resolution analog-to-digital convertors (ADCs), which can strike a
good balance between performance and circuit cost. Based on the linear additive
quantization noise model (AQNM), the effect of low-resolution ADCs on the
methods, such as Root-MUSIC method, is analyzed. Also, the closed-form
expression of Cramer-Rao lower bound (CRLB) is derived to evaluate the
performance loss caused by the low-resolution ADCs. The simulation results show
that the Root-MUSIC methods can achieve the corresponding CRLB. Furthermore,
2-3 bits are acceptable for most applications if the 1dB performance loss.
