JP2006504366A - マルチアンテナ通信システムのための送信ダイバーシティ処理 - Google Patents
マルチアンテナ通信システムのための送信ダイバーシティ処理 Download PDFInfo
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Abstract
【解決手段】マルチアンテナOFDMシステムにおける送信ダイバーシティに対して、データシンボルを得るために送信機はトラフィックデータを符号化し、インターリーブし、そしてシンボルマップする。送信機は、1対のアンテナから伝送に対する2対の送信シンボルを得るためにデータシンボルの各対を(1)空間‐時間送信ダイバーシティに対しては2個のOFDMシンボル期間中に、あるいは(2)空間‐周波数送信ダイバーシティに対しては2個のサブバンド上でのいずれかで処理する。NT(NT−1)/2個の異なったアンテナ対が、隣接のサブバンドに対して使用されている異なったアンテナ対とともに、データ伝送に対して使用される。ここでNTはアンテナの数である。システムは複数のOFDMシンボルサイズをサポートすることが可能である。
Description
システム100は、異なったデータの形式を送信するために輸送チャネルのセットを使用する。典型的な設計においては、下りリンク上のアクセスポイント110は、放送チャネル(BCH:broadcast channel)上にシステム情報、順方向制御チャネル(FCCH:forward control channel)上に制御データ、そして順方向チャネル(FCH:forward channel)上に特定のユーザ端末に対するトラフィックデータを送信する。上りリンク上のユーザ端末150は、ランダムアクセスチャネル(RACH:random access channel)上にアクセスデータおよびメッセージを、そして逆方向チャネル(RCH:reverse channel)にトラフィックデータを送信する。他のシステム設計も異なったおよび/あるいは他の輸送チャネルを使用することが可能である。送信ダイバーシティは、輸送チャネルの各々に対して使用されることが可能である。
エンコーダ216は、各パケットを符号化し、1個のベース符号に基づいてレート1/2符号ビットを発生する。システムによってサポートされるすべての他の符号レートは(表1に示されるように)符号ビットを反復するかあるいはパンクチャするかの何れかによって得ることが可能である。
kl=4・ks−sgn(ks)・kos 式(1)
ここで、ksは短いOFDMシンボルのサブバンドに対するインデックスであり(ks
∈KS)、
kosはサブバンドインデックスオフセットであり(kos∈{0,1,2,3})
sgn(ks)はksの符号を与え、(すなわち“+”あるいは“−”)そして
klは長いOFDMシンボルのサブバンドに対するインデックスである(kl∈KL)。
短いOFDMシンボルの各データ/パイロットサブバンドは、長いOFDMシンボルの、サブバンドインデックスオフセットkosに対する4個の値と組み合わせられた、4個のデータ/パイロットサブバンドと組み合わせられる。
ここで、短いOFDMシンボルに対しては、k∈KSであり、そして長いOFDMシンボ
ルに対しては、k∈KLである。
IおよびQは、選択された変調方式に対する表4内の値である。そして
Kmodは、選択された変調方式によって異なる。
r1=h1s1+h2s2+n1、そして
r2=h1s2 *−h2s1 *+n2 式(3)
として表されることが可能である。
ここで、r1およびr2は、2個の連続したOFDMシンボル期間に対する2個の受
信されたシンボルであり、
h1およびh2は、考慮対象のサブバンドに対する、2個の送信アンテナから受
信アンテナまでの経路利得であり、そして
n1およびn2は、2個の受信されたシンボルr1およびr2それぞれに対する
雑音である。
およびX_2=〔s2−s1 *〕Tとして発生し、そしてこれらの2個のベクトルを続けて2個のOFDMシンボル期間中に送信することが可能である。ユーザ端末は2個のデータシンボルの推定値を
上の記述は、2個あるいはそれ以上の送信アンテナ、複数の受信アンテナ、および複数のサブバンドを有するシステムに対して拡張することが可能である。2個の送信アンテナは、各データサブバンドに対して使用される。s1(k)およびs2(k)として示される2個のデータシンボルは、与えられたサブバンドk上に送信されるべきものであると仮定しよう。アクセスポイントは2個のベクトル、x_1(k)=〔s1(k)s2(k)〕Tおよびx_2(k)=〔s2 *(k)−s1 *(k)〕T、あるいは等価的に2個のシンボルセット{xi(k)}={s1(k)s2 *(k)}および{xj(k)}={s2(k)−s1 *(k)}を発生する。各シンボルセットは、サブバンドk上のそれぞれのアンテナから、2個のOFDMシンボル期間中に連続して送信されるべき2個の送信シンボルを含む。(すなわち、シンボルセット{xi(k)}は、2個のOFDMシンボル期間中にアンテナiからサブバンドk上に送信され、そしてシンボルセット{xj(k)}は、同じ2個のOFDMシンボル期間中にアンテナjからサブバンドk上に送信される)。
r_1(k)=h_i(k)s1(k)+h_j(k)s2(k)+n_1(k)そして、
r_2(k)=h_i(k)s2 *(k)−h_j(k)s1 *(k)+n_2(k)
式(5)
として表されることが可能である。
ここで、r_1(k)およびr_2(k)は、ユーザ端末において2個の連続したOFD
M期間中にサブバンドk上に受信された2個のシンボルベクトル
であり、なお各ベクトルはNR個の受信アンテナに対するNR個の
受信されたシンボルを含んでおり、
h_i(k)およびh_j(k)は、サブバンドkに対する送信アンテナiおよ
びjに対するそれぞれ経路利得のベクトルであり、なお、各ベクト
ルは、組み合わせられた送信アンテナからNR個の受信アンテナの
各々までのチャネル利得を含んでおり、そして
n_1(k)およびn_2(k)は、2個の受信されたシンボルベクトルr_1(k)お
よびr_2(k)それぞれに対する雑音ベクトルである。
STTD方式は各データサブバンドに対して1対の送信アンテナを使用する。もしもアクセスポイントが2個の送信アンテナを装備される場合は、そこで両アンテナは短いOFDMシンボルのすべての48個のデータサブバンドに対して使用される。もしもアクセスポイントが4個の送信アンテナを装備される場合は、そこで各アンテナは48個のデータサブバンドの半分に対して使用される。表5は、短いOFDMシンボルに対するSTTD方式のための典型的なサブバンド‐アンテナ割り当て方式を示す。
kosは長いOFDMサブバンドインデックスklに対するサブバンドインデックスオフセットである(kos∈{0,1,2,3})。マップされた短いOFDMシンボルサブバンドインデックスksに対応するアンテナ対は、表5から決定され、そしてインデックスklを有する長いOFDMシンボルサブバンドに対して使用される。
TX空間的処理装置122aの中で、デマルチプレクサ612は、TXデータ処理装置120からデータシンボル{s(k)}のストリームを受信し、短いOFDMシンボルの48個のデータサブバンドに対する48個のデータシンボルサブストリームの中にストリームをデマルチプレクスし、そして各サブストリームをそれぞれの空間‐時間エンコーダ620に与える。各サブストリームはTs −1のシンボルレートに対応する各短いOFDMシンボル期間に対する1個のデータシンボルを含む。ここでTsは1個の短いOFDMシンボルの期間である。
TX空間的処理装置122bの中で、デマルチプレクサ712はTXデータ処理装置120からデータシンボル{s(k)}のストリームを受信し、長いOFDMシンボルの192個のデータサブバンドに対する192個のデータシンボルサブストリームの中にストリームをデマルチプレクスし、そして各サブストリームの対をそれぞれの空間‐周波数エンコーダ720に与える。各サブストリームは、TL −1のシンボルレートに対応する各長いOFDMシンボル期間に対する1個のデータシンボルを含む。ここで、TLは、1個の長いOFDMシンボルの期間である。
RXデータ処理装置170yの中で、シンボルデマッピングユニット972は、制御器180yによって与えられた復調制御によって示されたように、データストリームに対して使用された変調方式に従って回復されたデータシンボルを復調する。チャネルデインターリーバ974はそこで、制御器180yによって与えられたデインターリービング制御によって示されたようにアクセスポイント110において実行されたインターリービングと相補的な方法で復調されたデータをデインターリーブする。短いOFDMシンボルに対しては、デインターリービングは、各短いOFDMシンボルに対する48個のデータサブバンドに亙って、上に記述されたインターリービングと相補的に実行される。長いOFDMシンボルに対しては、デインターリービングはまた上に記述されたようにして48個のデータサブバンドの4個のブロックの各々に亙って実行される。復号器976はそこでデインターリーブされたデータを、制御器180yによって与えられた復号制御によって示されたように、アクセスポイント110において実行された符号化と相補的な方法で復号する。ビタビ(Viterbi)復号器が上に記述された畳み込みコーディング方式に対する復号器976として使用されることが可能である。デスクランバ978はアクセスポイント110において実行されたスクランブリングと相補的な方法で復号されたデータをデスクランブルする。図9には示されないがCRC検査器はパケットが正しくあるいは誤りをもって受信されたか否かを決定するためにパケット内に含まれるCRC値に基づいて各パケットを検査することが可能である。パケット状態はユーザ端末150yによって誤って受信されたパケットの再伝送を開始するために使用されることが可能である。
明確化のために、送信ダイバーシティ処理技術は典型的なマルチアンテナOFDMシステム内の下りリンクに対して上に記述されてきている。これらの技術はまた複数のアンテナを装備したユーザ端末によって上りリンクに対して使用することが可能である。また明確化のためにこれらの技術はOFDMシステムに対して記述されてきている。1個のOFDMシンボルサイズ、(上に記述したように)2個のOFDMシンボルサイズ、あるいは2個以上のOFDMシンボルサイズをサポートすることが可能である。これらの技術の多くは単一搬送波マルチアンテナシステムに対して使用されることがまた可能である。
Claims (52)
- 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおいて、伝送のためにデータを処理する方法であって、
符号化されたデータを得るために、コーディング方式に従ってトラフィックデータをコーディングし、
インターリーブされたデータを得るために、インターリービング方式に従って符号化されたデータをインターリービングし、
データシンボルのストリームを得るために、変調方式に従ってインターリーブされたデータをシンボルマッピングし、そして
1対のアンテナから伝送のための送信シンボルの2対を得るために、ストリーム内のデータシンボルの各対を処理する、ここで各送信シンボルはデータシンボルの変形である、
ことを含む方法。 - ここで、データシンボルの各対に対する送信シンボルの2個の対は、2個のOFDMシンボル期間中に同じサブバンド上のアンテナの対から送信される、請求項1記載の方法。
- ここで、データシンボルの各対に対する送信シンボルの2個の対は、1個のOFDMシンボル期間中に2個のサブバンド上の1対のアンテナから送信される、請求項1記載の方法。
- ここで、N個のアンテナがデータ伝送のために使用可能であり、そしてNT・(NT−1)/2個の異なったアンテナの対がストリーム内のデータシンボルの対を送信するために使用される、ここでN>2である、請求項1記載の方法。
- ここで、複数のサブバンドがデータ伝送に対して使用され、そしてここで、異なったアンテナの対がデータ伝送に対して使用される隣接したサブバンドに対して使用される、請求項1記載の方法。
- ここで、システムはS個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートする、ここでSは1よりも大きい整数であり、そしてLはSの倍数の整数である、請求項1記載の方法。
- さらに、
複数のアンテナに対する複数の送信シンボルのストリームを形成し、そして
OFDMシンボルの対応するストリームを得るために、第1あるいは第2のOFDMシンボルサイズに従って送信シンボルの各ストリームを変換する
ことを含む、請求項6記載の方法。 - ここで、コーディングは
固定された符号レートで符号ビットを得るために、ベース符号に従ってトラフィックデータをコーディングし、そして
システムによってサポートされる複数の符号レートの一つで符号ビットを含む符号化されたデータを得るために、固定された符号レートで符号ビットをパンクチャする
ことを含む、請求項1記載の方法。 - ここで、ベース符号はレート1/2畳み込み符号である、請求項8記載の方法。
- ここで、複数の符号レートは複数のパンクチャリングパターンと組み合わせられている、請求項8記載の方法。
- ここで、コーディングは、
固定された符号レートで符号ビットを得るために、ベース符号に従ってトラフィックデータをコーディングし、
固定された符号レートよりもより低い符号レートで符号ビットを含む符号化されたデータを得るために、固定された符号レートで符号ビットを反復する
ことを含む、請求項1記載の方法。 - ここで、インターリービングは
符号化されたデータからの符号ビットのシーケンスを形成し、そして
シーケンスの各々に対してインターリービング方式に基づいて、シーケンス内の各符号ビットを複数のサブバンドの1個にマッピングする
ことを含む、請求項1記載の方法。 - ここで、符号ビットの各シーケンスは1個のOFDMシンボル期間中に複数のサブバンド上の伝送に対して指定されている、請求項12記載の方法。
- ここで、インターリービングは
符号化されたデータから符号ビットのシーケンスを形成し、
シーケンスの各々を、サブバンドのM個のばらばらなグループ上に伝送のためにM個の符号ビットのブロックに分割し、なお符号ビットの1個のブロックはサブバンドの各グループに対するものであり、ここでM≧2であり、そして
各シーケンスに対するM個のブロックの各々に対して、インターリービング方式に基づいてブロック内の各符号ビットをそのブロックに対するグループ内のサブバンドの一つに対してマッピングする、
ことを含む、請求項1記載の方法。 - ここで、シンボルマッピングは
インターリーブされたデータ内のB個のビットのセットをB‐ビットのバイナリ値を形成するために分類し、ここでB≧1であり、そして
変調方式に基づいてB‐ビットバイナリ値の各々をデータシンボルにマッピングする、ここで変調方式はその変調方式に対する信号コンスタレーション内の、2個の隣接したデータシンボルが、B個のビットの中の多くて1ビットだけ異なるようにグレイマッピングで定義されている
ことを含む、請求項1記載の方法。 - ここで、シンボルマッピングはさらに、
セットの各々に対してB個のビットを再配列する、そしてここで再配列されたB個のビットのセットはB‐ビットバイナリ値を形成するために使用される、
ことを含む、請求項15記載の方法。 - 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおける送信機であって、
符号化されたデータを得るために、コーディング方式に従ってトラフィックデータを符号化する能力を有するエンコーダと、
インターリーブされたデータを得るために、インターリービング方式に従って符号化されたデータをインターリーブする能力を有するインターリーバと、
データシンボルのストリームを得るために、変調方式に従ってインターリーブされたデータをシンボルマップする能力を有するシンボルマッピングユニットと、そして
1対のアンテナから伝送のための2対の送信シンボルを得るために、ストリーム内のデータシンボルの各々の対を処理する能力を有する送信空間的処理装置と、ここで、各送信シンボルはデータシンボルの変形である
を含む送信機。 - ここで、送信空間的処理装置は空間‐時間送信ダイバーシティを実行し、そして2個のOFDMシンボル期間中にデータシンボルの各々の対に対する2対の送信シンボルを与える能力を有する、請求項17記載の送信機。
- ここで、送信空間的処理装置は空間‐周波数送信ダイバーシティを実行し、そして2個のサブバンド上にデータシンボルの各々の対に対する2対の送信シンボルを与える能力を有する、請求項17記載の送信機。
- ここで、システムはS個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートする、ここでSは1より大きい整数であり、そしてLはSの倍数の整数である、請求項17記載の送信機。
- さらに、
複数のアンテナに対する複数の変調器を含む、なお各変調器はアンテナに対するOFDMシンボルの対応するストリームを得るために組み合わせられたアンテナに対する送信シンボルのストリームを変換する能力を有する、請求項20記載の送信機。 - 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおける装置であって、
符号化されたデータを得るために、コーディング方式に従ってトラフィックデータをコーディングするための手段と、
インターリーブされたデータを得るために、インターリービング方式に従って符号化されたデータをインターリービングするための手段と、
データシンボルのストリームを得るために、変調方式に従ってインターリーブされたデータをシンボルマッピングするための手段と、そして
アンテナの1対からの伝送に対する2対の送信シンボルを得るために、ストリーム内のデータシンボルの各々の対を処理するための手段とを有する、ここで各送信シンボルはデータシンボルの変形である、
装置。 - ここで、データシンボルの各対に対する2対の送信シンボルは、2個のOFDMシンボル期間中に1対のアンテナから送信される、請求項22記載の装置。
- ここで、データシンボルの各対に対する2対の送信シンボルは、2個のサブバンド上に1対のアンテナから送信される、請求項22記載の装置。
- ここで、システムは、S個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートし、ここでSは1よりもより大きい整数であり、そしてLはSの倍数の整数である、請求項22記載の装置。
- さらに、
複数のアンテナに対する送信シンボルの複数のストリームを形成するための手段と、そして
OFDMシンボルの対応するストリームを得るために、第1あるいは第2のOFDMシンボルサイズに従って送信シンボルの各ストリームを変換するための手段と
を含む、請求項25記載の装置。 - 無線マルチアンテナ通信システムにおいて、伝送のためにデータを処理する方法であって、方法は、
符号化されたデータを得るために、コーディング方式に従ってトラフィックデータをコーディングし、
インターリーブされたデータを得るために、インターリービング方式に従って符号化されたデータをインターリービングし、
データシンボルのストリームを得るために、変調方式に従ってインターリーブされたデータをシンボルマッピングし、そして
ストリーム内のデータシンボルの各々の対は1対のアンテナから送信され、そしてストリーム内のデータシンボルの連続的な対は異なったアンテナ対から送信されるように、データシンボルのストリームをデマルチプレクスする
ことを含む、方法。 - ここで、デマルチプレクシングはさらに、符号化されたデータの各符号ビットは、符号ビットの符号レートに基づいて符号ビットに対して達成可能な最大数(番号)のアンテナから送信されるようになっている、請求項27記載の方法。
- ここで、MIMOシステムは直交周波数分割多重(OFDM)を実行する、請求項27記載の方法。
- ここで、ストリーム内のデータシンボルの各々の対は、1個のサブバンド上の1対のアンテナから送信され、そしてここで隣接したサブバンドに対するデータシンボルの対は、異なったアンテナの対から送信される、請求項29記載の方法。
- ここで、符号化されたデータに対するS個の符号ビットの各グループはインターリーブされる、ここでSはデータ伝送に使用されるサブバンドの数である、請求項29記載の方法。
- 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおいて、伝送のためにデータを処理する方法であって、方法は、
符号化されたデータを得るために、コーディング方式に従ってトラフィックデータをコーディングし、
インターリーブされたデータを得るために、インターリービング方式に従って符号化されたデータをインターリービングし、
データシンボルのストリームを得るために、変調方式に従ってインターリーブされたデータをシンボルマッピングし、そして
ストリーム内のデータシンボルの各々の対が2個のサブバンド上の1対のアンテナから送信されるように、データシンボルのストリームをデマルチプレクスする
ことを含む方法。 - ここで、ストリーム内のデータシンボルの各々の対は、データ伝送に対して使用可能な2個の隣接したサブバンド上に送信される、請求項32記載の方法。
- さらに、
送信シンボルの第1および第2の対を得るために、ストリーム内のデータシンボルの各々の対を処理することを含む、なお送信シンボルはデータシンボルの対におけるデータシンボルの一つの変形であり、ここで送信シンボルの第1の対は第1のサブバンド上のアンテナの対から送信され、そして送信シンボルの第2の対は第2のサブバンド上のアンテナの対から送信される、請求項32記載の方法。 - ここで、送信シンボルの第1および第2の対は、一つのOFDMシンボル期間中に第1および第2のサブバンド上にそれぞれ同時に送信される、請求項34記載の方法。
- 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおいて、受信機においてデータを処理する方法であって、方法は、
受信されたシンボルのベクトルのストリームを取得し、なお各ベクトルはN個の受信アンテナに対するN個の受信されたシンボルを含み、ここでNは1あるいはより大きく、
それは2個の送信アンテナからの送信シンボルの2対として送信された2個のデータシンボルの推定値である、2個の回復されたデータシンボルを得るために、ストリーム内の受信されたシンボルのベクトルの対の各々を処理し、なお各送信シンボルはデータシンボルの変形であり、ここで回復されたデータシンボルのストリームは、受信されたシンボルのベクトルのストリームに対して得られており、
復調されたデータを得るために、復調方式に従って回復されたデータシンボルのストリームをシンボルデマッピングし、
デインターリーブされたデータを得るために、デインターリービング方式に従って復調されたデータをデインターリービングし、そして
復号されたデータを得るために、復号方式に従ってデインターリーブされたデータを復号する
ことを含む方法。 - ここで、受信されたシンボルのベクトルの対の各々は2個のOFDMシンボル期間に対するものである、請求項36記載の方法。
- ここで、受信されたシンボルのベクトルの対の各々は2個のサブバンドに対するものである、請求項36記載の方法。
- ここで、システムはS個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートし、ここでSは1よりもより大きい整数であり、そしてLはSの倍数の整数である、請求項36記載の方法。
- さらに、
受信アンテナに対して受信されたシンボルの対応するストリームを得るために、第1のあるいは第2のOFDMシンボルサイズに従ってN個の受信アンテナの各々に対するサンプルのストリームを変換することを含む、そしてここで受信されたシンボルのベクトルのストリームは、N個の受信アンテナに対する受信されたシンボルのN個のストリームから得られている、請求項39記載の方法。 - ここで、N=1であり、そして各ベクトルは1個の受信アンテナに対する1個の受信されたシンボルを含む、請求項36記載の方法。
- ここで、N>1であり、そして各ベクトルは複数の受信アンテナに対する複数の受信されたシンボルを含む、請求項36記載の方法。
- 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおける受信機であって、
受信されたシンボルのベクトルのストリームを受信し、2個の送信アンテナからの2対の送信シンボルとして送信された2個のデータシンボルの推定値である、2個の回復されたデータシンボルを得るために、ストリーム内の受信されたシンボルのベクトルの各々の対を処理する能力を有する受信空間的処理装置と、ここで、各ベクトルはN個の受信アンテナに対するN個の受信されたシンボルを含み、ここでNは1あるいはより大きく、そしてここで、回復されたデータシンボルのストリームは受信されたシンボルのベクトルのストリームに対して得られており、
復調されたデータを得るために、復調方式に従って回復されたデータシンボルのストリームをシンボルデマップする能力を有するシンボルデマッピングユニットと
デインターリーブされたデータを得るために、デインターリービング方式に従って復調されたデータをデインターリーブする能力を有するデインターリーバと、そして
復号されたデータを得るために、復号方式に従ってインターリーブされたデータを復号する能力を有する復号器とを含む
受信機。 - ここで、受信されたシンボルのベクトルの各々の対は2個のOFDMシンボル期間に対するものである、請求項43記載の受信機。
- ここで、受信されたシンボルのベクトルの各々の対は2個のサブバンドに対するものである、請求項43記載の受信機。
- ここで、システムはS個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートする、ここでSは1よりもより大きい整数であり、そしてLはSの倍数の整数である、
請求項43記載の受信機。 - さらに、
N個の受信アンテナに対するN個の復調器を含む、なお各復調器は、受信アンテナに対する受信されたシンボルの対応するストリームを得るために第1あるいは第2のOFDMシンボルサイズに従って、組み合わせられた受信アンテナに対するサンプルのストリームを変換する能力を有しており、そしてここで、受信されたシンボルのベクトルのストリームはN個の受信アンテナに対する受信されたシンボルのN個のストリームから得られている、請求項46記載の受信機。 - 無線マルチアンテナ直交周波数分割多重(OFDM)通信システムにおける装置であって、
受信されたシンボルのベクトルのストリームを得るための手段と、なお各ベクトルはN個の受信アンテナに対するN個の受信されたシンボルを含んでおり、ここでNは1あるいはより大きく
2個の送信アンテナからの送信シンボルの2個の対として送信された2個のデータシンボルの推定である、2個の回復されたデータシンボルを得るためにストリーム内の受信されたシンボルのベクトルの各々の対を処理するための手段と、なお各送信シンボルはデータシンボルの変形であり、ここで回復されたデータシンボルのストリームは受信されたシンボルのベクトルのストリームに対して得られており、
復調されたシンボルを得るために、復調方式に従って受信されたデータシンボルのストリームをシンボルデマッピングための手段と、
デインターリーブされたデータを得るために、デインターリービング方式に従って復調されたデータをデインターリービングするための手段と、そして
復号されたデータを得るために、復号方式に従ってデインターリーブされたデータを復号するための手段と
を含む装置。 - ここで、受信されたシンボルのベクトルの対の各々は、2個のOFDMシンボル期間に対するものである、請求項48記載の装置。
- ここで、受信されたシンボルのベクトルの対の各々は、2個のサブバンドに対するものである、請求項48記載の装置。
- ここで、システムはS個のサブバンドを有する第1のOFDMシンボルサイズおよびL個のサブバンドを有する第2のOFDMシンボルサイズをサポートする、ここで、Sは1よりもより大きい整数であり、そしてLはSの倍数の整数である、請求項48記載の装置。
- さらに、
受信アンテナに対する受信されたシンボルの対応するストリームを得るために第1あるいは第2のOFDMシンボルサイズに従ってN個の受信アンテナの各々に対するサンプルのストリームを変換するための手段を含む、そしてここで受信されたシンボルのベクトルのストリームはN個の受信アンテナに対する受信されたシンボルのN個のストリームから得られている、請求項51記載の装置。
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JPWO2005109710A1 (ja) * | 2004-05-11 | 2008-03-21 | 松下電器産業株式会社 | 無線送信装置、無線受信装置、及び、無線通信システム |
JP4785736B2 (ja) * | 2004-05-11 | 2011-10-05 | パナソニック株式会社 | 無線送信装置、無線受信装置、及び、無線通信システム |
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JP2008508816A (ja) * | 2004-07-29 | 2008-03-21 | クゥアルコム・インコーポレイテッド | 周波数ダイバーシティのためのシステム及び方法 |
JP4694568B2 (ja) * | 2004-07-29 | 2011-06-08 | クゥアルコム・インコーポレイテッド | 周波数ダイバーシティのためのシステム及び方法 |
US8189539B2 (en) | 2004-07-29 | 2012-05-29 | Qualcomm Incorporated | System and method for frequency diversity |
JP2008510386A (ja) * | 2004-08-12 | 2008-04-03 | インターデイジタル テクノロジー コーポレーション | 直交周波数分割多重無線通信システムにおける空間周波数ブロックコーディングを実行する方法および装置 |
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JP2008533856A (ja) * | 2005-03-09 | 2008-08-21 | クゥアルコム・フラリオン・テクノロジーズ、インコーポレイテッド | 無線端末におけるアンテナ制御の方法および装置 |
JP4748691B2 (ja) * | 2005-03-09 | 2011-08-17 | クゥアルコム・インコーポレイテッド | 無線端末におけるアンテナ制御の方法および装置 |
US8498252B2 (en) | 2009-07-06 | 2013-07-30 | Intel Corporation | Midamble for wireless networks |
JP2012532572A (ja) * | 2009-07-06 | 2012-12-13 | インテル・コーポレーション | 無線ネットワーク用のミッドアンブル(midamble) |
JP2016040908A (ja) * | 2011-04-19 | 2016-03-24 | パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | プリコーディング方法、プリコーディング装置 |
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US8873365B2 (en) | 2014-10-28 |
US20100208841A1 (en) | 2010-08-19 |
UA83473C2 (uk) | 2008-07-25 |
CA2501449C (en) | 2012-11-27 |
AU2003284943C1 (en) | 2009-07-23 |
WO2004038987A3 (en) | 2004-07-15 |
US8934329B2 (en) | 2015-01-13 |
US20060039275A1 (en) | 2006-02-23 |
CA2501449A1 (en) | 2004-05-06 |
JP5199324B2 (ja) | 2013-05-15 |
IL167572A (en) | 2011-03-31 |
EP1556983B1 (en) | 2013-06-05 |
US7002900B2 (en) | 2006-02-21 |
KR101073331B1 (ko) | 2011-10-12 |
HK1086123A1 (en) | 2006-09-08 |
KR20050072767A (ko) | 2005-07-12 |
US20040081073A1 (en) | 2004-04-29 |
JP4739952B2 (ja) | 2011-08-03 |
BRPI0315520B1 (pt) | 2017-03-07 |
TWI339057B (en) | 2011-03-11 |
AU2009201783B2 (en) | 2011-04-21 |
JP2011030262A (ja) | 2011-02-10 |
WO2004038987A2 (en) | 2004-05-06 |
BR0315520A (pt) | 2005-09-27 |
CN1717889A (zh) | 2006-01-04 |
EP1556983A2 (en) | 2005-07-27 |
CN1717889B (zh) | 2011-05-25 |
AU2009201783A1 (en) | 2009-05-28 |
TW200417214A (en) | 2004-09-01 |
AU2003284943B2 (en) | 2009-02-05 |
AU2003284943A1 (en) | 2004-05-13 |
MXPA05004194A (es) | 2005-06-08 |
IL167572A0 (en) | 2009-02-11 |
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