Yingxian Zhang, Aijun Liu, Xiaofei Pan, Thomas M. Chen, Vol. 8, No. 7, July 28, 2014
10.3837/tiis.2014.07.003

• Secure MQAM scheme
• signal constellation hopping (SCH)
• amplitude distortion (AD) factor
• phase hopping (PH) factor
• secrecy gain