In　this　paper,　a　method　of　reducing　peak　to　average　power　ratio　(PAPR)　in　3GPP-LTE　uplink　(SC-FDMA)　was　proposed.　We　investigated　the　method　of　reducing　PAPR　using　pilot　sequences　and　detailed　schemes.　The　advantages　and　disadvantages　of　Walsh-Hadamard　Sequences　were　discussed.　This　kind　of　sequence　is　easy　to　use　but　is　of　high　PAPR.　Then　we　discussed　several　CAZAC　sequences,　mainly　about　phase　shifted　sequences,　such　as　Chu　sequence,　Frank　sequence　and　Golomb　sequence.　We　also　compared　the　differences　between　various　kinds　of　pilot　sequences.　Considering　both　the　complexity　and　the　performance　improvement　of　these　sequences,　we　draw　the　conclusion　that　pilots　with　Golomb　Sequence　are　the　best　choice　among　the　sequences　above.