DISTRIBUTED CLOSE-LOOP EXTENDED ORTHOGONAL SPACE TIME BLOCK CODE

Although, the literature on space-time coding is quite richnow, the orthogonal designs of Alamouti [1], Tarokh et al.[2, 3], Naguib and Sesh´adri [4] remain popular. The strengthof orthogonal designs is that these lead to simple, optimal re-ceiver structure due to the pos[r]

Hindawi Publishing CorporationEURASIP Journal on Wireless Communications and NetworkingVolume 2008, Article ID 268979, 12 pagesdoi:10.1155/2008/268979Research ArticleGuaranteed Performance Region in Fading OrthogonalSpace-Time Coded Broadcast ChannelsEduard Jorswieck,1Bj¨orn Ottersten,1Aydin[r]

decoders while offering full diversity [7, 13]. Recently, com-plex orthogonal designs with maximal rates have been pro-posed by Liang where the entries are restricted to be the com-plex modulated symbols or their conjugates with or withouta sign change [14]. The upper bounds of the rates of ge[r]

EURASIP Journal on Applied Signal Processing 2004:5, 740–750c 2004 Hindawi Publishing CorporationSpace-Time Chip Equalization for MaximumDiversity Space-Time Block Coded DS-CDMADownlink TransmissionGeert LeusFaculty of Electrical Engineering, Mathemat ics, and Computer S[r]

Hindawi Publishing CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2008, Article ID 362809, 10 pagesdoi:10.1155/2008/362809Research ArticlePower-Efficient Relay Selection in Cooperative Networks UsingDecentralized Distributed Space-Time Block CodingLu Zha[r]

DSSS due to better interference suppression (anti-jamming)capability.Finally, the coverage range extension advantage ofemploying multiple antennas in UWB transmission is exam-ined in Figure 4. A path link model in [24] is used inthe simulation. We can see that compared to conventionalSISO, MISO and[r]

tination links have i.i.d. distributions. In [7], using thepairwise error probability (PEP) analysis in high SNRscenario, it is shown that uniform power allocation alongrelays is optimum. However, this assumption is hardlymet in practice and the path lengths among nodes couldvary. Therefore, power c[r]

it reduces intersymbol interference (ISI), obviates the needfor complex equalization, and thus greatly simplifies chan-nel estimation/equalization task. Moreover, its structure alsoallows efficient hardware implementations using fast Fouriertransform (FFT) and polyphase filtering [2]. On the otherhand,[r]

This study was supported by the Brazilian Council for Scientific andTechnological Development (CNPq).Competing interestsThe authors declare that they have no competing interests.Received: 1 December 2010 Accepted: 30 August 2011Published: 30 August 2011References1. S Alamouti, A simple transmit dive[r]

(45)we can finish the proof of this theorem.Y. Jing and B. Hassibi 96. SIMULATION RESULTSIn this section, we show simulated block error rates ofthree networks with multiple transmit/receive antennas andcompare them with the three PEP bounds we derived in(25), (31), and (40). These bounds are a[r]

permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.The distributed space-time (frequency) coding and distributed channel turbo coding used independently represent twocooperative techniques that can provide[r]

crease of encoding and decoding complexities was proposedby Rao et al. [6]. The single symbol decodability of coor-dinate interleaved orthogonal design (CIOD) [7]isanim-portant feature ensuring low decoding complexity. The jointuse of CIOD and OFDM provides spatial and multipath di-versities,[r]

¨U. Ayg¨ol¨u. This is an open access article distributed under the Creative Commons AttributionLicense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properlycited.1. INTRODUCTIONIn recent years, code design for multiple-inp[r]

Since the transmitted signals are from a PSK constellation,the peak-to-average power ratio of the transmitted signalsis equal to one. The choice of θ that can be used in (1)for both Binary Phase Shift Keying (BPSK) and QuaternaryPhase Shift Keying (QPSK) is given as 0, π and 0, π/2, π,3π/2, respecti[r]

Hindawi Publishing CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2008, Article ID 127689, 9 pagesdoi:10.1155/2008/127689Research ArticleCensored Distributed Space-Time Coding forWireless Sensor NetworksS. Yiu and R. SchoberDepartment of Electrical and Compute[r]

Hindawi Publishing CorporationEURASIP Journal on Wireless Communications and NetworkingVolume 2007, Article ID 97475, 7 pagesdoi:10.1155/2007/97475Research ArticleA Simple Differential Modulation Scheme forQuasi-Orthogonal Space-Time Block Codes withPartial Transmit Diver[r]

Hindawi Publishing CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2008, Article ID 471327, 9 pagesdoi:10.1155/2008/471327Research ArticleDistributed Space-Time Block Coded Transmissionwith Imperfect Channel Estimation: Achievable Rateand Power AllocationLeila[r]

employees in department 10:DECLARE cur PLS_INTEGER := DBMS_SQL.OPEN_CURSOR; fdbk PLS_INTEGER;BEGIN DBMS_SQL.PARSE (cur, 'SELECT * FROM emp WHERE deptno = 10', DBMS_SQL.NATIVE); fdbk := DBMS_SQL.EXECUTE_CURSOR (cur); FOR Nfetch IN 1 5 LOOP /* On fetch #5 this will raise ORA−01002 */ fdbk := D[r]

Functions concerned with a probabilistic block grade distribution derivedfrom the kriging of indicatorsAssign fromStringAssign data from the description fields of closed segments to attributevalues of blocks that are contained within those segments extended inthe direction of one of th[r]

IST projects aiming at such flexible transceiver architectures. Finally, a specific example of a mode-selection algorithmic architec-ture is presented which incorporates all the proposed tools and, therefore, illustrates a baseband flexibility mechanism.Keywords and phrases: flexible radio, reconfigurabl[r]