A mobile communications terminal configured to transmit a reference signal in a wireless communication system, comprising: a processor configured to execute instructions stored on non-transitory media which when executed perform the acts of: generating a plurality of reference signal sequences by cyclically shifting a base sequence x u (n); mapping each of the plurality of reference signal sequences to a corresponding single carrier frequency division multiple access (SC-FDMA) symbol among a plurality of SC-FDMA symbols in a subframe to form the reference signal, the subframe including the plurality of SC-FDMA symbols in a time domain and one resource block in a frequency domain, the resource block including 12 subcarriers; and a transmitter configured to transmit the reference signal, wherein the base sequence x u (n) is expressed by x u n = e jp n π / 4, and wherein a length of the reference signal sequence r(n) is 12,at least one of the sets of values provided in the below table is used as a set of values for the phase parameter p(n): Sequence index (u) p,..., p 0 -1 -3 -1 1 1 -3 3 1 3 1 1 -1 1 -1 3 3 -3 3 1 -1 -1 -3 -1 1 -1 2 -1 1 -3 -1 -3 -3 -3 1 -1 -3 1 -1 3 -1 3 -1 1 1 -3 -3 -1 -3 -3 3 -1 4 -1 3 1 -3 3 -3 -1 -3 -3 3 -3 -1 5 -1 1 3 3 1 -3 3 3 1 3 -1 -1 6 -1 1 1 3 -1 1 1 1 -1 -3 3 -1 7 -1 1 1 -1 -1 -1 3 1 3 -3 3 -1 8 -1 3 1 3 1 -1 -1 3 -3 -1 -3 -1 9 -1 -3 1 -1 -3 1 1 1 -1 1 -3 -1 10 -1 -3 -1 -3 -1 -1 3 -3 -3 3 1 -1 11 -1 -3 1 1 -1 1 -1 -1 3 -3 -3 -1 12 -1 1 -3 -1 1 -1 3 3 1 -1 1 -1 13 -1 -3 1 3 -1 -1 3 1 1 1 1 -1 14 -1 -1 1 1 -1 -3 -1 -3 -3 1 3 -1 15 -1 -3 3 -1 1 1 -3 -1 -3 -1 -1 -1 16 -1 1 -3 3 -1 -1 3 -3 -3 -3 -3 -1 17 -1 3 3 -3 3 -3 -3 1 1 -1 -3 -1 18 -1 -1 -3 -1 -3 -3 1 1 3 -3 3 -1 19 -1 3 -3 1 -1 3 -1 -3 -3 -1 -1 -1 20 -1 1 -1 -3 -1 -1 1 3 -3 3 3 -1 21 -1 1 -1 1 1 3 -1 -1 -3 3 3 -1 22 -1 1 3 -3 -3 3 -1 -1 -3 -1 -3 -1 23 -1 -3 1 -1 -3 -1 3 -3 3 -3 -1 -1 24 -1 -3 -3 -3 1 -1 1 1 -3 -1 1 -1 25 -1 -3 -1 1 1 3 -1 1 -1 -3 3 -1 26 -1 3 3 1 -3 -3 -1 1 1 -1 1 -1 27 -1 3 1 -1 -3 -3 -3 -1 3 -3 -3 -1 28 -1 -3 1 1 1 1 3 1 -1 1 -3 -1 29 -1 3 -3 3 -1 3 3 -3 3 3 -1 -1 a processor configured to execute instructions stored on non-transitory media which when executed perform the acts of: generating a plurality of reference signal sequences by cyclically shifting a base sequence x u (n); mapping each of the plurality of reference signal sequences to a corresponding single carrier frequency division multiple access (SC-FDMA) symbol among a plurality of SC-FDMA symbols in a subframe to form the reference signal, the subframe including the plurality of SC-FDMA symbols in a time domain and one resource block in a frequency domain, the resource block including 12 subcarriers; and generating a plurality of reference signal sequences by cyclically shifting a base sequence x u (n); mapping each of the plurality of reference signal sequences to a corresponding single carrier frequency division multiple access (SC-FDMA) symbol among a plurality of SC-FDMA symbols in a subframe to form the reference signal, the subframe including the plurality of SC-FDMA symbols in a time domain and one resource block in a frequency domain, the resource block including 12 subcarriers; and a transmitter configured to transmit the reference signal, wherein the base sequence x u (n) is expressed by x u n = e jp n π / 4, and wherein a length of the reference signal sequence r(n) is 12,at least one of the sets of values provided in the below table is used as a set of values for the phase parameter p(n): Sequence index (u) p,..., p 0 -1 -3 -1 1 1 -3 3 1 3 1 1 -1 1 -1 3 3 -3 3 1 -1 -1 -3 -1 1 -1 2 -1 1 -3 -1 -3 -3 -3 1 -1 -3 1 -1 3 -1 3 -1 1 1 -3 -3 -1 -3 -3 3 -1 4 -1 3 1 -3 3 -3 -1 -3 -3 3 -3 -1 5 -1 1 3 3 1 -3 3 3 1 3 -1 -1 6 -1 1 1 3 -1 1 1 1 -1 -3 3 -1 7 -1 1 1 -1 -1 -1 3 1 3 -3 3 -1 8 -1 3 1 3 1 -1 -1 3 -3 -1 -3 -1 9 -1 -3 1 -1 -3 1 1 1 -1 1 -3 -1 10 -1 -3 -1 -3 -1 -1 3 -3 -3 3 1 -1 11 -1 -3 1 1 -1 1 -1 -1 3 -3 -3 -1 12 -1 1 -3 -1 1 -1 3 3 1 -1 1 -1 13 -1 -3 1 3 -1 -1 3 1 1 1 1 -1 14 -1 -1 1 1 -1 -3 -1 -3 -3 1 3 -1 15 -1 -3 3 -1 1 1 -3 -1 -3 -1 -1 -1 16 -1 1 -3 3 -1 -1 3 -3 -3 -3 -3 -1 17 -1 3 3 -3 3 -3 -3 1 1 -1 -3 -1 18 -1 -1 -3 -1 -3 -3 1 1 3 -3 3 -1 19 -1 3 -3 1 -1 3 -1 -3 -3 -1 -1 -1 20 -1 1 -1 -3 -1 -1 1 3 -3 3 3 -1 21 -1 1 -1 1 1 3 -1 -1 -3 3 3 -1 22 -1 1 3 -3 -3 3 -1 -1 -3 -1 -3 -1 23 -1 -3 1 -1 -3 -1 3 -3 3 -3 -1 -1 24 -1 -3 -3 -3 1 -1 1 1 -3 -1 1 -1 25 -1 -3 -1 1 1 3 -1 1 -1 -3 3 -1 26 -1 3 3 1 -3 -3 -1 1 1 -1 1 -1 27 -1 3 1 -1 -3 -3 -3 -1 3 -3 -3 -1 28 -1 -3 1 1 1 1 3 1 -1 1 -3 -1 29 -1 3 -3 3 -1 3 3 -3 3 3 -1 -1