A New MM-aryM Coded Construction and Demodulation Scheme

Zhu YouTuan; Zhu JinKang

Volume 27 Issue 9

Sep. 2005

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Article Navigation > Journal of Electronics & Information Technology > 2005 > 27(9): 1450-1453

Zhu YouTuan, Zhu JinKang. A New MM-aryM Coded Construction and Demodulation Scheme[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1450-1453.

Citation:

Zhu YouTuan, Zhu JinKang. A New MM-aryM Coded Construction and Demodulation Scheme[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1450-1453.

Zhu YouTuan, Zhu JinKang. A New MM-aryM Coded Construction and Demodulation Scheme[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1450-1453.

Citation:

Zhu YouTuan, Zhu JinKang. A New MM-aryM Coded Construction and Demodulation Scheme[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1450-1453.

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A New MM-aryM Coded Construction and Demodulation Scheme

Received Date: 2004-05-13
Rev Recd Date: 2004-09-26
Publish Date: 2005-09-19

Abstract

Abstract

In this paper, an improved method of constructing multiple quasi-orthogonal spreading codes and a new modulation and demodulation scheme based on position mapping are proposed on the research of methods of constructing multiple quasi-orthogonal codes, using new method of codes grouping and position mapping, and making the demodulating of the quasi-orthogonal branches into the combination of demodulating of orthogonal sequences codes, that will obtain better demodulation performance. Analysis and simulation prove that this scheme can reduce obviously the computer complexity in the receiver side. It will increase transmission speed of information and reduce bit error probability.

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References(1)

References

Wen Lin, Zhu Jinkang, Costa E, Weckerle M. M-ary MC CDMA in uplink for next generation mobile communication. IEEE VTC2003 - Fall, Orlando, 2003:2526 - 2530.[2]Cho Joonyoung, Kim Youhan, Cheun Kyungwhoon. A novel frequency-hopping spread-spectrum multiple-access network using M-ary orthogonal Walsh sequence keying[J].IEEE Trans. on Communications.2003, 51 (11):1885-[3]Eshima K, Hase Y, Oomori S, Takahashi F, Kohno R. M-ary UWB system using Walsh codes. IEEE Conference on Ultra Wideband Systems and Technologies. Baltimore, 21- 23 May2002:37 - 40.[4]Rappaport S Theodore. Wireless Communications Principles and Practice (Second Edition). Prentice-Hall PTR, 2002:255 - 350.[5]Shi Z N, Schlegel C. Spread Code Constrution for CDMA[J].IEEE Communications Letters.2003, 7( 1):4-

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