- Page 1 and 2: COMMUNICATION SCIENCES INSTITUTE
- Page 3: Dedication This dissertation is ded
- Page 7 and 8: List Of Tables 2.1 The distance spe
- Page 9 and 10: 3.4 The BLUE and LS estimators have
- Page 11 and 12: Abstract Space-time codes are effec
- Page 13 and 14: spreading. The focus of [HMP01] is
- Page 15 and 16: 5, respectively: first, for an arbi
- Page 17 and 18: Chapter 2 Space-Time Block Codes in
- Page 19 and 20: easily achieve maximum diversity (t
- Page 21 and 22: For example, a BPSK 2 × 2 block co
- Page 23 and 24: multipaths corresponding to each tr
- Page 25 and 26: where G(t) = [G (1) (t), . . . . .
- Page 27 and 28: where D α and D β are two codewor
- Page 29 and 30: For the quasi-static fading channel
- Page 31 and 32: and the non-zero segment of any lin
- Page 33 and 34: Let us consider the issue of achiev
- Page 35 and 36: as A and B respectively, and observ
- Page 37 and 38: L c = 1 0 7 9 14 0 0.00 30.56 16.00
- Page 39 and 40: where D (k) (t) is defined in Equat
- Page 41 and 42: For this special case of fixed spre
- Page 43 and 44: where ˜R = ŘT 1 Ř−1 2 Ř 1 . (
- Page 45 and 46: 2.5 Optimal Minimum Metric Codes In
- Page 47 and 48: index ρ c rate size constl OMM 1 1
- Page 49 and 50: 16 0 9 32-16ρ 2 32-16ρ 2 16 16 16
- Page 51 and 52: Class ρ ∆ p (ζ v ) N p code ind
- Page 53 and 54: 2. In a spread system (ρ = 0.3), t
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10 0 SNR OMM spread orthogonal 10
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ρ c =0.3 10 0 SNR Rate 1 4X2 2 Rat
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Code Comparison, Joint ML Decoder,
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2.6 Practical Considerations In thi
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2.6.2 Sensitivity to Correlation Us
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structure ] 1 structure ] 2 structu
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Chapter 3 On Suboptimal Linear Deco
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where σ t is signal-to-noise ratio
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decorrelator. Denote ‖x‖ 2 R x
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3.4 The Mapper Recall that the outp
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Now we evaluate the overall decoder
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and lim L HH R 3 H = r→∞ L r [1
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the FIM for random d is [ ∂ ln P
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Apparently R d is singular, which i
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L t =2, L r =1, K=1, ρ=0.3, ignori
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L t =2, L r =2, K=1, ρ=0.3, two re
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Chapter 4 Nonlinear Hierarchical Co
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signal corresponding to N c symbol
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1. full diversity ∆ H (D i − D
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epresent both for convenience. All
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We may construct the whole set from
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2. Most right isometries P are redu
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★ ✥ S k ✧ a U j , P j ✲ b
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3. Given Isometries U k U j and P j
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[ 2 ] [ 168 ] [ 42 ] [ 128 ] 1 1
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which are very likely to be optimal
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4X3 BPSK(8 Codewords) and QPSK(64 C
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Chapter 5 Regular Multiple Trellis
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The high rate performance is poor,
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ehavior of a regular trellis are: t
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All the NHCs found in this work sat
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Whenever there exist parallel trans
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M m g=1 g=2 g=4 g=8 next jump b=2 2
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provides a lower bound on the numbe
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Label S k S Comment Figure 1/2 I2S2
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Label S k O(= gbp) S(= gb) Figure 1
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2X2 QPSK, |S 5 |=32 codewords 10 0
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S k d S k S k ′ d H S 1 (1, 1, 1,
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Rate 6/2 2X2 8PSK, |S 7 |=128 vs |S
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1 172 251 330 1 1 1 304 413 486 87
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Rate 5/3, 3X3 QPSK, |S 7 |=128 Code
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parameters: the number of trellis g
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[DS87] D. Divsalar and M. K. Simon.
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[SHHS01] [Sle68] A. Shokrollahi, B.
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ù"ú"ú"û ù"ü"ù ù"ý0øJþ ÿ
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©¤¥¢©©©©¤©¤©©¤©¤©
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J;KL4MNL=L;L0K=O;P=Q;ORO=Q;O=Q;Q;MN
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0 1 14 1 7 8 Figure B.2: 2 × 2 BPS
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0 2 168 42 128 93 247 117 223 1 30
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0 2 168 42 128 93 247 117 223 30 18
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0 2 168 42 128 93 247 117 223 30 18