A communication node comprising: an angle-of-arrival estimator operable to estimate an angle-of-arrival for a received orthogonal-frequency division multiplexed, OFDM, signal based on a subcarrier level of at least one OFDM-symbol of a symbol-modulated subcarrier, the received signal being received by at least two antenna elements of a multi-element antenna, the received signal comprising a plurality of orthogonal subcarriers modulated with the at least one OFDM-symbol; wherein the angle-of-arrival estimator estimates the angle-of-arrival of the received signal using a plurality of pilot subcarriers spaced apart in a frequency spectrum of the received signal, Fast-Fourier Transform - FFT - circuitry to perform an FFT on parallel groups of time-domain samples that represent the at least one OFDM-symbol as received by said antenna elements to generate frequency-domain symbol-modulated subcarriers for use by the angle-of-arrival estimator in estimating the angle-of-arrival, characterised by a channel coefficient generator operable to generate channel coefficients from the estimated angle-of-arrival for processing subsequent symbols, and wherein the angle-of-arrival estimator includes a processor and memory operable to: generate an initial matrix X comprising demodulated pilot subcarriers for the at least one OFDM-symbol and for each of said antenna elements as provided by the FFT circuitry, wherein each row of X corresponds to one of said antenna elements; perform a search function to identify a peak corresponding to the estimated angle-of-arrival, wherein the search function is based on a decomposition of the matrix B=[A(Θ) x], wherein x is a vector representing the sums of the demodulated pilot subcarriers for each of said antenna elements; and wherein A(Θ) is an angle-of-arrival dependent response matrix generated based on the equation X=AD+N, wherein D is a diagonal matrix having elements corresponding to the pilot subcarriers of the OFDM-symbol, wherein said elements correspond to the known pilot symbols scaled by channel coefficients along with the phase shift, and wherein N is an uncorrelated noise matrix. an angle-of-arrival estimator operable to estimate an angle-of-arrival for a received orthogonal-frequency division multiplexed, OFDM, signal based on a subcarrier level of at least one OFDM-symbol of a symbol-modulated subcarrier, the received signal being received by at least two antenna elements of a multi-element antenna, the received signal comprising a plurality of orthogonal subcarriers modulated with the at least one OFDM-symbol; wherein the angle-of-arrival estimator estimates the angle-of-arrival of the received signal using a plurality of pilot subcarriers spaced apart in a frequency spectrum of the received signal, Fast-Fourier Transform - FFT - circuitry to perform an FFT on parallel groups of time-domain samples that represent the at least one OFDM-symbol as received by said antenna elements to generate frequency-domain symbol-modulated subcarriers for use by the angle-of-arrival estimator in estimating the angle-of-arrival, characterised by a channel coefficient generator operable to generate channel coefficients from the estimated angle-of-arrival for processing subsequent symbols, and wherein the angle-of-arrival estimator includes a processor and memory operable to: generate an initial matrix X comprising demodulated pilot subcarriers for the at least one OFDM-symbol and for each of said antenna elements as provided by the FFT circuitry, wherein each row of X corresponds to one of said antenna elements; perform a search function to identify a peak corresponding to the estimated angle-of-arrival, wherein the search function is based on a decomposition of the matrix B=[A(Θ) x], wherein x is a vector representing the sums of the demodulated pilot subcarriers for each of said antenna elements; and wherein A(Θ) is an angle-of-arrival dependent response matrix generated based on the equation X=AD+N, wherein D is a diagonal matrix having elements corresponding to the pilot subcarriers of the OFDM-symbol, wherein said elements correspond to the known pilot symbols scaled by channel coefficients along with the phase shift, and wherein N is an uncorrelated noise matrix. generate an initial matrix X comprising demodulated pilot subcarriers for the at least one OFDM-symbol and for each of said antenna elements as provided by the FFT circuitry, wherein each row of X corresponds to one of said antenna elements; perform a search function to identify a peak corresponding to the estimated angle-of-arrival, wherein the search function is based on a decomposition of the matrix B=[A(Θ) x], wherein x is a vector representing the sums of the demodulated pilot subcarriers for each of said antenna elements; and wherein A(Θ) is an angle-of-arrival dependent response matrix generated based on the equation X=AD+N, wherein D is a diagonal matrix having elements corresponding to the pilot subcarriers of the OFDM-symbol, wherein said elements correspond to the known pilot symbols scaled by channel coefficients along with the phase shift, and wherein N is an uncorrelated noise matrix.