SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES

Yang Yixian

Volume 9 Issue 4

Jul. 1987

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Article Navigation > Journal of Electronics & Information Technology > 1987 > 9(4): 368-370

Yang Yixian. SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES[J]. Journal of Electronics & Information Technology, 1987, 9(4): 368-370.

Citation:

Yang Yixian. SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES[J]. Journal of Electronics & Information Technology, 1987, 9(4): 368-370.

Yang Yixian. SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES[J]. Journal of Electronics & Information Technology, 1987, 9(4): 368-370.

Citation:

Yang Yixian. SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES[J]. Journal of Electronics & Information Technology, 1987, 9(4): 368-370.

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SOME NOTES ON JOHNSON BOUND AND GRAHAM BOUND OF CONSTANT WEIGHT CODES

Yang Yixian

Received Date: 1986-03-18
Rev Recd Date: 1986-09-08
Publish Date: 1987-07-19

Abstract

Abstract

Four classes of constant weight codes which can meet the Johnson upper bound and two classes of constant weight codes which are greater than the Graham lower bound are given in this paper.

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References(1)

References

S.M. Johnson, IRE Trans. on-IT, IT-18 (1962),203.[2]R. L. Graham, IEEE Trans. on-IT, IT-26(1980),37.[3]胡正明,通信学报,1985年,第2期,第44页.[4]M. Hall Jr., Combinatorial Theory, Blaisdell, Waltham, Mass, p. 141, pp. 232-233.

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