Wireless Communications over MIMO Channels phần 1 doc

... Mobile Telecommunications System V-BLAST Vertical BLAST WSSUS Wide Sense Stationary Uncorrelated Scattering WLAN Wireless Local Area Network ZF Zero Forcing 4 INTRODUCTION TO DIGITAL COMMUNICATIONS Figure ... independent, identically dis- tributed (i.i.d.) symbols x[k] is transmitted over a SISO channel as discussed in the last section. Moreover, we are restricted to an uncoded transmiss...

Ngày tải lên: 27/06/2014, 08:20

... p robabilit y S DU corrupt p robabilit y 1 9 10 − 9 10 − 9 10 − 9 10 − 2 4 10 − 5 10 − 5 10 − 6 10 − 3 2 10 − 5 10 − 5 10 − 2 10 − Table 2 . 1 . Re li a bili ty c l asses i n GPRS 2 Fun d amenta l s ... Shen and V.O.K. Li Table of Contents 1 Introduction to Enabling Technologies for Wireless E-Business W . Kou and Y. Yesha 1 1 .1 Intr...

Ngày tải lên: 07/08/2014, 21:20

... Networks 14 1 QoS in 802 .11 14 3 Legacy 802 .11 MAC 14 3 DCF 14 4 PCF 14 8 Conclusion 15 3 References 15 3 9 Engineering Vo802 .11 Networks for Maximum QoS 15 5 QoS on Vo802 .11 Networks 15 5 Measuring Voice ... Transmissions 17 9 Point-to-Multipoint Links 17 9 Point-to-Point Links 17 9 Limitations in the AP 18 0 Scalability in VoIP Switching 18 1 Conclusion 18 2 References 1...

Ngày tải lên: 14/08/2014, 06:22

... . 17 4 4 .1. 2 Direct-SequenceCDMA 18 1 4 .1. 3 Single-User Matched Filter (SUMF) . . . . . . . . . . . . . . . . . 18 5 4 .1. 4 SpreadingCodes 19 1 4.2 OFDM-CDMA 19 4 4.2 .1 MulticarrierTransmission 19 4 4.2.2 ... limited to the physical transmission Wireless Communications over MIMO Channels Vo l k e r K ă uhn 2006 John Wiley & Sons, Ltd Wireless Communications o...

Ngày tải lên: 14/08/2014, 12:20

... a nondissipative channel with σ 2 H = 1 E H  Pr{Y D à, | h} = 1 /2 0 sin 2 () sin 2 () + ( à, /2) 2 E s /N 0 d = 1 2 1 ( à, /2) 2 E s /N 0 1 + ( à, /2) 2 E s /N 0 . (1.57) Contrary to ... whole magnitude |H|= √ H 2 + H  2 is Rayleigh distributed p |H| (ξ) =  2 /σ 2 H · exp(−ξ 2 /σ 2 H )ξ≥ 0 0else (1 .26 ) with mean E H {|h|} =  πσ 2 H /2. In (1 .26...

Ngày tải lên: 14/08/2014, 12:20

... 0.01 b) P out = 0.1 Figure 2. 13 Outage probability of flat Rayleigh fading channels for Gaussian input 2 .3 Channel Capacity of MIMO Systems As explained earlier, MIMO systems can be found in a ... and (2 .33 ) can be rewritten as P w (x) =  x  ∈\{x  } Pr  Y ∈ D(x  ) | x  =  x  ∈\{x  }  y∈D(x  ) Pr{y | x}. (2 .34 ) The right-hand side of (2 .34 ) replaces y /∈ D(x) by the...

Ngày tải lên: 14/08/2014, 12:20

... by different means. The distance properties of codes are examined and used for Wireless Communications over MIMO Channels Vo l k e r K ă uhn 2006 John Wiley & Sons, Ltd 92 FORWARD ERROR ... −2b) √ E s /T s  2 σ 2 N  (3.39) into (3.38) results in L(r | b) = 4| h| √ E s /T s σ 2 N r = 4| h| 2 E s N 0    L ch ˜r with ˜r = r |h| √ E s /T s . (3 .40 ) In (3 .40 ), ˜r is a n...

Ngày tải lên: 14/08/2014, 12:20

... (3.114) 134 FORWARD ERROR CORRECTION CODING 0 0 .5 1 1 .5 2 0 0.2 0.4 0.6 0.8 1 0 0 .5 1 1 .5 2 0 0.2 0.4 0.6 0.8 1 L c = 3L c = 3 L c = 5L c = 5 L c = 7L c = 7 uncodeduncoded C/R c →C/R c → IPC ... 2 3 4 5 6 10 −4 10 −3 10 −2 10 −1 10 0 10 5 10 5 E b /N 0 in dB → BER → Max-Log-MAP, it. 1 Log-MAP, it. 1 Max-Log-MAP, it. 2 Log-MAP, it. 2 Max-Log-MAP, it. 6 Log-MAP, it. 6 Figure 3....

Ngày tải lên: 14/08/2014, 12:20

... presents some information on the theoretical results of CDMA systems. Wireless Communications over MIMO Channels Vo l k e r K ă uhn 20 06 John Wiley & Sons, Ltd CODE DIVISION MULTIPLE ACCESS 201 OFDM transmitter OFDM receiver despreading spreading S/P P/S channel Figure ... 1]. (4.9) 166 FORWARD ERROR CORRECTION CODING r 1 r 2 r 3 r 4 r 5 r 6 s 1 s 2 s 3 P V Figure 3.52 Bi...

Ngày tải lên: 14/08/2014, 12:20

... R rc c d f CCS 2 7 1/2 133 8 , 171 8 1/32 10 CCS 4 7 1/4 1 17 8 , 1 27 8 , 155 8 , 171 8 1/16 20 CCS 8 7 1/8 1 17 8 , 1 27 8 , 155 8 , 171 8 1/8 40 135 8 , 173 8 , 135 8 , 145 8 CSS 7 1/64 (Frenger ... g 2 = 171 8 Walsh, R wh c = 6/64 R rc c = 1/3 SCCC 1 g 1 = 7 8 , g 2 = 5 8 g 1 = 7 8 , g r 2 = 5 8 R rc c = 1/16 SCCC 2 g 1 = 7 8 , g 2 = 5 8 g 1 = 23 8 ,g 2 = 27 8 g r...

Ngày tải lên: 14/08/2014, 12:20

... a 4-path Rayleigh fading channel and E b /N 0 = 8 dB (solid lines: NL 1, dashed lines: NL 2) 0 0.4 0 .8 1.2 1.6 2 10 −3 10 −2 10 −1 10 0 0 0.4 0 .8 1.2 1.6 2 10 −3 10 −2 10 −1 10 0 BER → BER → a) ... D 1/2 m à=0 D 1/2 A R D 1/2 à D 1/2 r. (5. 48) MULTIUSER DETECTION IN CDMA SYSTEMS 255 0 2 4 6 8 10 −5 10 −4 10 −3 10 −2 10 −1 10 0 0 2 4 6 8 10 −5 10 −4 10 −3 10 −2 10 −1 10 0 E b...

Ngày tải lên: 14/08/2014, 12:20

... al. ( 199 7), Tarokh et al. ( 199 7, 199 8). Results of a systematic computer-based code search can be found in B ă aro et al. (2000a,b) and some implementation aspects in Naguib et al. ( 199 7, 199 8). Figure ... bit and power-loading strategies have been proposed by Hughes-Hartogs ( 198 9), Fischer and Huber ( 199 6), Krongold et al. ( 199 9, 2000), and Mutti and Dahlhaus (2004). MULTIPLE...

Ngày tải lên: 14/08/2014, 12:20

... MLD has to cope with all layers simultaneously. 0 5 10 15 20 10 −5 10 −4 10 −3 10 −2 10 −1 10 0 0 5 10 15 20 10 −5 10 −4 10 −3 10 −2 10 −1 10 0 E b /N 0 in dB →E b /N 0 in dB → BER → BER → a) ... i ≤ N holds. MULTIPLE ANTENNA SYSTEMS 319 0 5 10 15 20 25 30 10 −5 10 −4 10 −3 10 −2 10 −1 10 0 0 5 10 15 20 25 30 10 −5 10 −4 10 −3 10 −2 10 −1...

Ngày tải lên: 14/08/2014, 12:20

... xxvii I Introduction 1 1 Ad Hoc and Sensor Networks 3 1. 1 TheFutureofWirelessCommunication 3 1. 1 .1 Adhocnetworks 3 1. 1.2 Wirelesssensornetworks 5 1. 2 Challenges 7 1. 2 .1 Adhocnetworks 8 1. 2.2 Wirelesssensornetworks ... unidirectional links . . . . . . . . . . 11 1 10 .7 The LMST protocol 11 3 11 .1 Intuition behind the CBTC protocol 11 6 11 .2 Difference betw...

Ngày tải lên: 14/08/2014, 14:20

... i> ;1 then 10 : if P − i 1 < P + j then 11 : P − ⇐ P − i 1 12: P + ⇐ P + j 13 : exit 14 : end if 15 : end if 16 : i ⇐ i − 1 17: j ⇐ j +1 18: end while Pseudocode 1 Heuristic 1 (EIRP range computation). ... d + ij ]: d ij = d 0 ì 10 ( P RSS i L(d 0 )z) /10 d 0 ì 10 ( P RSS j L(d 0 )+z) /10 = d 0 ì 10 (P +P RSS i P L(d 0 )z) /10 d 0 ì 10 (P...

Ngày tải lên: 14/08/2014, 19:20