Error control technique for parallel combinatory spread spectrum communication system
Shigenobu Sasaki, Jinkang Zhu, Gen Marubayashi · Electronics and Communications in Japan (Part III Fundamental Electronic Science) · 1993
Abstract This paper discusses the application of the error control technique for parallel combinatory spread spectrum (PC‐SS) communication system proposed previously by the authors. This paper considers the case where &‐bit information is transmitted in the spreading sequences and considers the following two coding methods as suited to PC‐SS systems: 1) to use 2k‐ary Reed‐Solomon code; and 2) to use the constant‐weight code by Chung et al. in the transmitter, converting the data into the combinatory spreading sequences, and to suppress the error in the receiver by taking the double correlation. The bit‐error rate performance is examined for the two methods and the effectiveness is discussed. It is shown as a result that both methods are useful in improving the bit‐error rate of the PC‐SS system. In the latter method, the number of spreading sequences needed per user is reduced to approximately one‐fourth compared to the conventional PC‐SS system with nearly the same bit‐error rate.