Research on spreading sequence in CDMA communication system
Congying Zhang · Jisuanji gongcheng yu sheji · 2009
To improve the property of traditional spreading sequence, a new composite sequence method based on gold sequence and Walsh sequence is proposed.The generation and correlation properties of m sequence, Gold sequence and Walsh sequence are analyzed.Due to the non-perfect correlation property of Walsh sequence, multiplied the loop sequences, Gold sequence and Walsh sequence are compounded by using the main idea of the composite sequence.Then a new composite Gold-Walsh sequence is designed.The comparison experiment on the traditional coding sequences and Gold-Walsh sequence is done.Simulation result shows the superior correlation property of the composite spreading sequence.