A method for generating Physical Random Access Channel, PRACH, reference segments in a Long Term Evolution, LTE, communication system, the method comprising: generating, by a preamble sequence generation unit, a plurality of preamble sequences using a CAZAC sequence, wherein each preamble sequence has a length of a valid CAZAC sequence, and wherein the length of each preamble sequence is one of 839 and 139; transforming, by a first Discrete Fourier Transform, DFT, unit, the plurality of preamble sequences into a plurality of frequency domain signals by performing a DFT on the plurality of preamble sequences; generating, by a subcarrier mapping unit, a plurality of subcarrier mapped signals by performing subcarrier mapping of the plurality of frequency domain signals, wherein the subcarrier mapping is performed based on a subcarrier spacing associated with a Physical Random Access Channel PRACH in a Long Term Evolution, LTE, communication system; transforming, by an Inverse DFT, IDFT, unit, the plurality of subcarrier mapped signals into a plurality of time domain signals by performing an IDFT, wherein the plurality of time domain signals are sampled at a sampling rate suitable to a receiver system and a suitable IDFT length is selected based on the sampling rate, in order to perform transformations; generating, by a CP-insertion unit, a plurality of standard PRACH preamble signal by adding a Cyclic Prefix, CP, to each time domain signal of a plurality of time domain signals, wherein the CP is a copy of an end-segment of the time domain signal; segmenting, by a segmenting unit, each standard PRACH preamble signal from the plurality of standard PRACH preamble signals to generate a plurality of segments of uniform size, wherein the segments are either contiguous or non-contiguous, wherein the non-contiguous segments are separated by a time gap accommodated in between each segment of the non-contiguous segments; generating, by a second DFT unit, a plurality of frequency domain segments by performing a half-subcarrier shift and a DFT on the plurality of segments, wherein the frequency domain segments comprise sub-carriers spaced in accordance with a Single Carrier Frequency Division Multiple Access, SC-FDMA, signal; and generating, by a first subcarrier de-mapping unit, a plurality of PRACH reference segments by selecting frequency locations from the plurality of frequency domain segments, wherein the frequency locations correspond to PRACH frequency locations. generating, by a preamble sequence generation unit, a plurality of preamble sequences using a CAZAC sequence, wherein each preamble sequence has a length of a valid CAZAC sequence, and wherein the length of each preamble sequence is one of 839 and 139; transforming, by a first Discrete Fourier Transform, DFT, unit, the plurality of preamble sequences into a plurality of frequency domain signals by performing a DFT on the plurality of preamble sequences; generating, by a subcarrier mapping unit, a plurality of subcarrier mapped signals by performing subcarrier mapping of the plurality of frequency domain signals, wherein the subcarrier mapping is performed based on a subcarrier spacing associated with a Physical Random Access Channel PRACH in a Long Term Evolution, LTE, communication system; transforming, by an Inverse DFT, IDFT, unit, the plurality of subcarrier mapped signals into a plurality of time domain signals by performing an IDFT, wherein the plurality of time domain signals are sampled at a sampling rate suitable to a receiver system and a suitable IDFT length is selected based on the sampling rate, in order to perform transformations; generating, by a CP-insertion unit, a plurality of standard PRACH preamble signal by adding a Cyclic Prefix, CP, to each time domain signal of a plurality of time domain signals, wherein the CP is a copy of an end-segment of the time domain signal; segmenting, by a segmenting unit, each standard PRACH preamble signal from the plurality of standard PRACH preamble signals to generate a plurality of segments of uniform size, wherein the segments are either contiguous or non-contiguous, wherein the non-contiguous segments are separated by a time gap accommodated in between each segment of the non-contiguous segments; generating, by a second DFT unit, a plurality of frequency domain segments by performing a half-subcarrier shift and a DFT on the plurality of segments, wherein the frequency domain segments comprise sub-carriers spaced in accordance with a Single Carrier Frequency Division Multiple Access, SC-FDMA, signal; and generating, by a first subcarrier de-mapping unit, a plurality of PRACH reference segments by selecting frequency locations from the plurality of frequency domain segments, wherein the frequency locations correspond to PRACH frequency locations.