Walsh-Hadamard codeIn this paper, the Walsh-Hadamard code design using optical nonlinear material is presented. Walsh-Hadamard codes are absolutely orthogonal binary user codes which have so many favourite applications in synchronous multicarrier communications. However, the optical application of Walsh-...
In one embodiment, a Walsh-Hadamard decoder can have a hardware efficient Fast Hadamard Transform ("FHT") engine. In one embodiment, the FHT engine can include an input to receive an input sequence to be decoded into a Walsh-Hadamard codeword. The FHT engine can further include a controller...
This paper presents a novel transmission diversity scheme for code division multiple access system. Conventional diversity receivers in mobile stations r... I Jeong,M Nakagawa - 《Ieice Transactions on Communications》 被引量: 81发表: 1998年 Maximum-Likelihood Subchannel Detection in Forward Links for...
"Abstract -- The matrix form of the Walsh functions . . . can be generated by the modulo-2 product of two generating matrices: the natural binary code, and the transpose of the bit-reversed form of the first. As a result, the coefficients of the Walsh transform occur in bit-reversed o...
which is used in signal processing applications, has the Walsh functions in the order shown in the table above. Hadamard ordering, which is used in controls applications, arranges them as 0, 4, 6, 2, 3, 7, 5, 1. Dyadic or gray code ordering, which is used in mathematics, arranges th...
Keywords: Blind recognition,Convolutional code,High bit error rate,Walsh-Hadamard ransform盲识别,卷积码,高误码率,Walsh-Hadamard变换 Full-Text Cite this paper Add to My Lib Abstract: In order to solve the problem of the blind recognition of channel coding, a method of blind recognition of...
In particular, we will use appropriately chosen subsets of Hadamard-Walsh code as codewords. For a multipath channel of length L, we partition a Hadamard-Walsh code of size N into G subsets, where G is a power of two with G ≥ L. We will show that the N/G codewords in any of ...
Probability of correct range detection of selected WHS in presence of active noise jamming is described and it is compared with cases when Barker code is used for binary encoding of radar signals and when widely used linear frequency modulation inside pulse duration is used to spread spectrum of ...
Abstract This chapter is devoted to the study of the Walsh-Hadamard transform (WHT), which is perhaps the most well-known of the nonsinusoidal orthogonal transforms. The WHT has gained prominence in various digital signal processing applications, since it can essentially be computed using additions ...
5) Walsh code 沃尔什码6) walsh functions argument m 沃尔什参数m补充资料:上古之什补亡训传十三章·采蜡一章 【诗文】:(采蜡,怨奢也。荒岩之间,有以纩蒙其身。腰藤造险,及有群蜂肆毒,哀呼不应,则上舍藤而下沈壑。)采采者蜡,于泉谷兮。煌煌中堂,烈华烛兮。新歌善舞,弦柱促兮;荒岩之人,...