Wireless Communications over MIMO Channels phần 7 pot

... 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

... investigated for implementa- tion in various telecommunications technologies (ATM, modern IP networks, etc.). Thus, 184 Broadband Powerline Communications Networks realized by redirecting the transmission ... 5.55 Realization of priorities in contention MAC protocols 160 Broadband Powerline Communications Networks C C C C 0 S S 0 012345 67 t Collision resolution interval (...

Ngày tải lên: 14/08/2014, 01:21

... Topics WiMAX: Technology for Broadband Wireless Access Lout Nuaymi â 20 07 John Wiley & Sons, Ltd. ISBN: 0- 470 -02808-4 164 WiMAX: Technology for Broadband Wireless Access of bandwidth required for ... synchronised 178 WiMAX: Technology for Broadband Wireless Access 7. Establish IP connectivity. At this point, the SS uses the Dynamic Host Confi gu...

Ngày tải lên: 14/08/2014, 09:22

... . 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

... You’ll need to contact your favorite vendor for the latest details. 2 47 Chapter 13: Problems with Keeping on the Air 19_ 575 252 ch13.qxd 9/2/04 4: 07 PM Page 2 47 However, the station cannot remain ... & Troubleshooting 20_ 575 252 ch14.qxd 9/2/04 4:08 PM Page 254 Chantry Networks (www.chantrynetworks.com), Cisco Systems (www.cisco. com ), Extreme Networks (www.extremenetworks....

Ngày tải lên: 14/08/2014, 14:20

... (e.g., voice traffic) and with multiple traffic types (i.e., multimedia networks) . We can use analytical and/ or simulation techniques 236 Traffic Analysis and Design of Wireless IP Networks 0 20 40 60 80 100 120 140 12.2 ... used in wireless networks. 246 Traffic Analysis and Design of Wireless IP Networks 1 2 C Wireless link à 22222 ,,,, hcn à 1...

Ngày tải lên: 14/08/2014, 14:20