Low-complexity soft-input soft-output demodulation of orthogonal modulation
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 919-921 |
| Journal / Publication | IEEE Communications Letters |
| Volume | 11 |
| Issue number | 12 |
| Publication status | Published - Dec 2007 |
Link(s)
Abstract
This letter is concerned with the soft-input softoutput (SISO) demodulation of M-ary (M = 2r) orthogonal modulation. We prove that the SISO orthogonal demodulation (SISO-OD) is equivalent to the SISO decoding of orthogonal Hadamard codes, for which we deduct a posteriori probability fast Hadamard transform (APP-FHT) algorithm. With FHT and the proposed APP-FHT, the demodulation complexity can be reduced from O(r2r) to O(2r) exponential/logarithm operations and O(r22r) to O(2r) additions, respectively. © 2007 IEEE.
Research Area(s)
- Fast Hadamard transform, Hadamard codes, Orthogonal modulation, Soft-input soft-output demodulation
Citation Format(s)
Low-complexity soft-input soft-output demodulation of orthogonal modulation. / Che, Shuling; Wang, Peng; Ping, Li et al.
In: IEEE Communications Letters, Vol. 11, No. 12, 12.2007, p. 919-921.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
