Title :
Transmission efficiency of code shift keying
Author :
Guo, Lili ; Kuroyanagi, Noriyoshi ; Suehiro, Naoki
Author_Institution :
Harbin Shipbuilding Eng. Inst., China
Abstract :
The authors determine the frequency utilization efficiency of code shift keying (CSK) under practical design parameters. If an ideal bit-position discriminating function for M-sequence is used, the information conveyed by one frame of M chips (the length of M-sequence) increases to log2M bits. This is the principle of CSK. However, it is more vulnerable to noise than the conventional spread spectrum system, DS-BPSK. The authors compare the transmission capacities of CSK and BPSK under identical conditions of receiving signal power, Gaussian and interfering noise power, frequency bandwidth, and bit error rate. The result shows that CSK is capable of transmitting 2~4.5 times the capacity of BPSK
Keywords :
Gaussian noise; channel capacity; codes; error statistics; radio spectrum management; sequences; spread spectrum communication; BPSK; Gaussian noise; M-sequence; bandwidth; bit error rate; code shift keying; frequency; frequency utilization efficiency; interfering noise; signal power; transmission capacities; Bandwidth; Binary phase shift keying; Bit error rate; Design engineering; Frequency estimation; Frequency shift keying; Gaussian noise; Hardware; Spread spectrum communication; Tail;
Conference_Titel :
Military Communications Conference, 1993. MILCOM '93. Conference record. Communications on the Move., IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0953-7
DOI :
10.1109/MILCOM.1993.408550
