[1] Simon M K, Smith J. Hexagonal multiple phase-and-amplitude-shift-keyed signal sets[J]. Communications, IEEE Transactions on, 1973, 21(10): 1108-1115.[2] Mow W H. Fast decoding of the hexagonal lattice with applications to power efficient multi-level modulation systems[C]//Singapore ICCS/ISITA'92, Communications on the Move. Singapore: IEEE, 1992: 370-373.[3] Tanahashi M, Ochiai H. A multilevel coded modulation approach for hexagonal signal constellation[J]. Wireless Communications, IEEE Transactions on, 2009, 8(10): 4993-4997.[4] McKilliam R G, Ryan D J, Clarkson I V L, et al. Block noncoherent detection of hexagonal QAM[C]//Communications Theory Workshop (AusCTW), 2010. Australian: IEEE, 2010: 65-70.[5] Choi H Y, Morita I. Performance evaluation of 6-level PSK signal using differential demodulation with partial symbol delay[C]//Communications and Photonics Conference and Exhibition, 2011 ACP. Shanghai: IEEE, 2011: 1-6.[6] Fan Xingyu, Wang Shuai, An Jianping, et al. Base vectors linear combination modulation approach for hexagonal signal constellation[J]. Communications Letters, IEEE, 2013, 17(12): 2237-2240.[7] Timothy Sauer. Numerical analysis[M]. 2th ed. Beijing: China Machine Press, 2012: 273-277. |