However, when one CAZAC sequence is always used depending on the frequency bandwidth in each cell, any occurrence of {TAIL ~ a poor combination} of {HEAD ~ the frequency bandwidth} with the interfering cell may lead to continuously large interference in all frames, causing a large reduction in the communications quality 
However , when one CAZAC sequence is always used depending on the frequency bandwidth in each cell , any occurrence of { TAIL ~ a poor combination } of { HEAD ~ the frequency bandwidth } with the interfering cell may lead to continuously large interference in all frames , causing a large reduction in the communications quality
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH